These closed and abandoned astronomical observatories once gazed skyward into a star-spangled universe, revealing hidden wonders of time and space. Once.

You’ll typically find observatories atop the highest mountains, mainly because there’s less air to see through up there. Smaller countries with smaller mountains do the best they can, as is the case with this abandoned observatory (or old radar station, depending on the source) slowly deteriorating high up on Portugal’s aptly named Serra da Estrela (“Star Mountain Range”).

Case Western University Observatory, Ohio

Flickr member David Barnas (Dark Spot Photography) perfectly captures the lonely majesty of abandoned observatories in the above image. This breathtaking photo dates from May of 2013 and offers a unique view of the dome of one of Case Western University’s now-disused observatories.

Lick Observatory, California

Lick Observatory encompasses a number of telescopes and other related observing tools protected by structural domes of various ages and sizes. With construction atop Mount Hamilton near San Jose, California beginning in 1876, Lick Observatory boasts individual observatories in current use, temporarily closed and outright abandoned pending demolition. Flickr members Kelly The Deluded (kjoyner666) and Panoramio user Nick Sower captured what appears to be the 20-Inch Carnegie Double Astrograph in need of a new paint job – at the very least.

City Observatory, Edinburgh, Scotland

The venerable City Observatory on Calton Hill in Edinburgh, Scotland dates back to 1818 and provided stalwart scientific service for nearly two centuries – the Astronomical Society of Edinburgh moved out of the observatory in 2009. Since then, the buildings have been managed by the City of Edinburgh Council, who restored the interior decor but then rented out the rooms as holiday accommodations. Flickr member Jenni Douglas (photojenni) snapped the interior of one of the observatory’s domes in May of 2007.

Crimea, Ukraine

Russia’s hotly-contested annexation of Crimea from the Ukraine was still six years away when Flickr member Max Bashyrov (movaxdx) snapped the above image of “some kind of abandoned observatory.” With all that visible rust, we’ll have to assume it was formerly engaged in observing Mars, the Red Planet.

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Star Crossed 10 More Abandoned Observatories

We don’t even need to go searching for signs of aliens to find incredibly bizarre and unexplainable objects and events in outer space, from a ‘black widow’ pulsar that’s devouring its own mate to a lonely rogue planet doomed to wander alone for all eternity. Now that we’ve witnessed 2017’s much-hyped total solar eclipse, which crossed the entire United States for the first time since 1918, let’s take a look at some other amazing astronomic phenomena that remain mysterious to science.

The Black Widow Pulsar

Officially known as Pulsar J1311-3430, this pulsar weighs as much as two suns, yet it’s only about the size of Washington D.C. It’s getting heavier because it’s feeding on its ‘mate,’ a normal star, stripping layers away from it with its powerful beam. Eventually, it will devour it. (Image via NASA)

The Boötes Void

Discovered in 1981 by astronomer Robert Kirshner and his team, the Boötes Void is a massive expanse of empty space about 700 million light years from Earth. The largest known void in the Universe, it measures an incredible 250 million light years in diameter and contains just 60 galaxies, which is incredibly sparse for its size. It should contain bout 10,000. Astronomers aren’t sure why the void exists, though some theorize that supervoids are caused by the intermingling of smaller voids. (image via Wikipedia)

Gamma Ray Bursts

The most powerful explosions in the universe, gamma ray busts are usually associated with the collapse of a massive star an the birth of a black hole (how metal.) These bursts of high-energy light typically last a minute or less, and occur every couple days. (Image via NASA)

Lonely Rogue Planet

This wandering planet known as CFBDSIR2149 separated from its parent star and wanders around the universe alone. Astronomers believe that it’s just one of billions of such ‘castaway planets,’ which are ostracized from their solar systems during their formative years when other plants’ orbits are establishing themselves (image via European Southern Observatory)

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Eclipsing Belief 8 Rare And Amazing Astronomic Objects Events

Scientists and alien life seekers alike are all looking to solve the mystery of a distant star, activity around which, according to astronomers including Jason Wright of Penn State University, suggests a “swarm of megastructures” (images via SETI).

While no one has sighted little green men, the phenomenon is perplexing. “Aliens should always be the very last hypothesis you consider, but this looked like something you would expect an alien civilisation to build,” says Wright. The puzzle centers around a series of dimming events around a star to which no conventional scientific explanation (such as dust clouds or passing planets) seems to apply. The star is in the wrong stage of maturity to be flickering as it appears to be without some external factor yet to be discovered.

Wright is not alone, and we may not be either. The anomaly was first spotted by citizen volunteers (Planet Hunters) drafted to look for planets around stars through the Kepler Space Telescope, then subsequently confirmed by observing scientists. “We are looking at [KIC 8462852,  near the Milky Way] with the Allen Telescope Array,” said Seth Shostak, a senior astronomer at the SETI (Search for Extraterrestrial Intelligence) Institute in Mountain View, California. “We’d never seen anything like this star,” says Tabetha Boyajian, a postdoc at Yale. “It was really weird. We thought it might be bad data or movement on the spacecraft, but everything checked out.”

One of the most fascinating things about this find is that this is all so difficult to visualize. We have no high-resolution imagery that would making the determination of ‘natural’ versus ‘artificial’ easy to make or the problem simpler to understand. Instead, we are left with theories and interpretations of data, which so far imply a non-natural space project that could be anything from an orbital solar array to a space colony under construction or even an outright attempt to reflect light in patterns in order to contact other civilizations. And while there are other possibilities, none of the current nature-centric suggestions hold up to scrutiny as yet. Given the history of such finds, one should expect to be disappointed, but for now the mystery remains a source of excitement for scientists and civilians alike.

These twelve abandoned observatories tell no universal tales; their heavenly visions now fatally fogged as their expansive domes lie locked and shuttered.

Odorheiu Secuiesc Observatory, Romania

(images via: Jakab Aron Csaba)

Vlad the Observer? The abandoned observatory in Odorheiu Secuiesc, Transylvania, Romania was abandoned before it was even operational. Construction began in 1889… make that 1989 (images can deceive) under the auspices of the autocratic Ceausescu regime which was rapidly nearing a violent end. By 1990, Romania had shrugged off communism and pre-approved projects like the observatory at Odorheiu Secuiesc found their funding cut off.

Truro Observatory, Cornwall, UK

(images via: Belief In Ruins and UER)

Considering the reputation England has for inclement weather, was building an observatory in Cornwall really such a great idea? A group of amateur astronomers thought so, and in 2000 they demonstrated their confidence by volunteering time, materials and skills to build two domes with plans on paper for a third. The group was also confident local and regional governments would contribute funding to support the project, which in hindsight (and even foresight) was a huge mistake. By 2002 the project was deep in debt, all work stopped and vandalism began. A pity these so-called observers weren’t more, er, observant.

Lamont–Hussey Observatory, Bloemfontein, South Africa

(images via: U-M Astronomy and Joe Mynhardt)

The stately Lamont–Hussey Observatory located on naval Hill in the city of Bloemfontein, Free State, South Africa, opened in 1928 and featured a 27-inch (0.69 m) refracting telescope. Conceived, built, owned and operated by the University of Michigan, the Lamont–Hussey Observatory closed in 1972 after its usefulness as an astronomical instrument had been superseded by numerous other such facilities.

Daniel S. Schanck Observatory, New Jersey, USA

(images via: Wikipedia/Tomwsulcer, AFAR and Rutgers Rarities Investigations)

Few abandoned buildings look as good as the Greek Revival-style Daniel S. Schanck Observatory, located on the Queens Campus of Rutgers University in New Brunswick, New Jersey. Architect Willard Smith took inspiration from the Tower of the Winds in Athens, Greece when designing the octagonal observatory building, which opened in 1865. After the observatory closed in the 1960s, the building suffered from neglect and occasional vandalism before being cosmetically renovated by Wu & Associates, Inc in 2012.

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Cracked Mirrors 12 More Eerie Abandoned Observatories

The outlook on (or from) abandoned observatories remains negative, mainly because there’s no one there to look up and no working optics to see through. Casualties of war, funding, politics and light pollution, these 15 eerie abandoned observatories have definitely seen better days… and nights.

Moon Over Mohon del Trigo

(images via: Granada Natural and Daniel Zafra Romero)

The Mohon del Trigo observatory was built in 1902 to take advantage of the clear, dry air 2,607m (8,553ft) above sea level in Spain’s Sierra Nevada mountains. By the early 1970s, however, its astronomical usefulness was on the wane – a new optical and radio observatory built nearby sealed its fate.

(images via: Roberto Travesi and Daniel Zafra Romero)

Left to the vagaries of weather and the indignities of graffiti artists, the Mohon del Trigo observatory slowly crumbles in situ, complementary with the slowly eroding rocks overlooking Pradollano in Andalusia.

Iowa Zombie Fortress

(image via: WunderPhotos)

No one expects a town in Iowa to be named “Hills”, but everyone expects an old abandoned observatory to be found on Observatory Avenue… about 10 miles from the University of Iowa, to be exact. This simple, unadorned representative of mid-century American architecture no longer watches the heavens, it now watches the Earth for zombies and, of course, the Children of the Corn.

Rusting in Russia

(images via: EnglishRussia and Antares-610)

Nobody’s listening in Nizhny Novgorod yet the metal ears of a host of radio telescopes still aim skywards. These rusty holdovers from the Soviet era were once cutting-edge scientific tools in what was then known as Gorky, a closed city where the focus was on Space Age military research and advanced weapons systems production.

(images via: Antares-610)

Though Nizhny Novgorod reclaimed its traditional name after the fall of USSR in 1991, years of chronic underfunding left many of its scientific installations out in the cold – literally. The only ongoing Space Race these days is between Mother Nature and local metal scavengers.

Not Hot in Cleveland

(images via: Christopher Busta-Peck, Bridget Callahan and Benjamin Chodroff)

Dedicated in 1920, the abandoned Warner & Swasey Observatory was built by precision instrument makers Worchester R. Warner and Ambrose Swasey on Taylor Road, four miles east of the Case School of Applied Science in East Cleveland. The main dome originally housed a 9.5-inch refractor, then a 24-inch Burrell Schmidt telescope, and finally a 36-inch telescope as the observatory fought a losing race against light pollution from Cleveland.

(image via: Christopher Busta-Peck)

In 1983, following the removal of the 36-inch reflecting telescope, the property and buildings at Taylor Road were sold but remained unused and unmodified for decades. Real estate broker Nayyir Al Mahdi bought the property in 2005 with the intention of reinventing the twin-domed observatory building as a unique home but Al Mahdi’s conviction of mortgage fraud in 2007 put the kibosh on those plans.

Vlad the Astronomer?

(image via: F.Arkan)

It may not yet be the Year of the Diamond Dogs, but when red mutant eyes gaze down on hunger city, you can bet they’ll do so from an abandoned observatory in Bashkortostan.

Canary Eye Land

(images via: 24 Hours, Here and ING/IAC)

Not all observatories lead long and distinguished lives. Take the Jacobus Kapteyn Telescope, for example. Opened in 1983, its dome sheltered a 40 metric ton, 1-meter-mirrored ‘scope that was deemed obsolete a mere 20 years later. Rising above the clouds of La Palma in the Canary Islands, the JKT was taken out of service as a common-user facility in August of 2003 and the infrastructure will likely molder away as-is due to the difficulty and expense of removing it.

Way Beyond Thunderdome

(images via: Brandon_Belew and PyZahl)

Bellport, on Long Island’s south shore, may not seem to be an obvious location for an observatory but there it is, like it or not. Seems as though those who frequented the grandly named “Astronomical Observatory” chose the latter option.

Homegrown Dome Home

(images via: UrbEx Barrie)

Innisfil Observatory, located around an hour’s drive north of Toronto, Canada, wasn’t exactly a big-league observatory nor was it your average home, but perhaps the best that can be said is that it combined features of both. All well and good until the owner’s finances did a black hole act which led to said owner doing a vanishing act. Pity the eyesore he left behind couldn’t do the same, but at least its ruins offer urban explorer/photographers plenty worth observing.

(images via: UrbEx Barrie)

Originally constructed in 1976 by Heinz Lorenz for the Canadian Astronomical Research Group’s 24-inch telescope, the building was decommissioned in 1997 and sold, ‘scope-less, to a Vietnamese civil engineer. Kudos to the intrepid members of UrbEx Barrie for recording the interior “furnishings” of the gutted, vandalized and graffiti-blighted Innisfil Observatory. The group’s musically-accompanied, somewhat Blair Witch-like video of their visit can be viewed here.

The Barcroft Barn

(images via: COHP, Riverside Astronomical Society, WMRS and Stanford University)

The “small dome” at the Barcroft High Altitude Physiology Laboratory (not to be confused with the main observatory dome built in 1976) was constructed in the 1960s, 12,750 feet up California’s White Mountain in about as desolate a landscape as one can find short of Antarctica’s Dry Valleys.

(image via: Norma R)

The weather-beaten dome and corrugated sheet metal walls of the lower level look even more alien due to the quintapod instrument set up nearby, and why not? The inhospitable conditions near White Mountain’s 14,246ft high summit would probably appeal more to Martians than humans anyway.

Eyeless in Lisbon

(images via: True Dirt)

Lisbon’s Botanical Garden (Jardim Botanico) may be one of the Portuguese capitol’s lesser-known attractions but that doesn’t mean it’s well worth visiting. Among the wealth of exotic plants on display are an abundance of gracefully aging buildings such as the tropic-exotic “Observatorio Astronomico”.

(image via: True Dirt)

Festooned in peeling pastel paint and running rivulets of rust, the Observatorio Astronomico hasn’t observatorio’d any astronomico-licious sights for the better part of a century but one wonders what it must have been like back in its heyday, strolling on up to the front doors and announcing one’s self via those incredible lion knockers!

Ill in Illinois

(image via: Thad Ligon)

You’d be forgiven for mistaking the silently rusting observatory above for just another silo, being that it’s situated smack dab in the middle of Illinois farm country. We’re not forgiving the anonymous observatory builder, however, who thought flat, moist, mid-western pastures were an ideal location for a sensitive astronomical instrument typically sited in deserts or mountaintops.

Good Knightridge, Observatory

(images via: Cindy47452 and Snjr22)

The abandoned Indiana University observatory at Knightridge, near Bloomington, was built in 1936-37 and boasted electric power. When its 4-ton, cast iron framed optics were transferred to the Paul H. Robinson Observatory in New Jersey sometime in the mid-1960s, the observatory build was stripped of usable mechanical parts and left in the woods to molder away.

(image via: Cindy47452)

Over three quarter of a century later, the brick & mortar lower level has held up remarkably well while the wood-framed dome is showing its age. If not for an unlucky blow from a falling tree, the observatory would be in much better shape. Nobody has any use for it, however, so maybe the decline and eventual fall of the Knightridge Observatory is all part of the great circle of telescopic life.

Was Very Nice!

(images via: Medeu @ RedBubble)

Think of domed buildings in Central Asia and observatories don’t immediately come to mind, which is understandable as some of Kazakhstan’s older, abandoned observatories have lost their domes – but gained character in the process. The abandoned observatories above are nestled in the foothills of the storied Tien Shan Mountains, relics of the Soviet age of engineering and empire.

Patagonian Outpost

(images via: Barblee and DougLetterman)

How lonely must the astronomers sentenced, er, sent to work at the now-abandoned Austral Felix Aguilar Observatory in Santa Cruz have felt, surrounded by mucho nada bar the endlessly howling Patagonian winds? Perhaps that’s why it was abandoned: staffing the outpost was one problem, supplying it was another. Observatories are ideally sited in remote areas free from light pollution and traffic vibrations but can you get too much of a good thing? Si senor, si.

Scoping Out Peach Mountain

(images via: Detroit Urbex)

University of Michigan’s Stinchfield Woods were once deep, dark, and seemingly the ideal location for large telescopes. Times changed and although the woods are making a comeback, the University’s ‘scopes are not. Light pollution from nearby Ann Arbor has rendered UM’s various optical telescopes ineffectual though a host of radio telescopes continue making valuable observations.

(image via: Stinchfield Woods Caretaker’s Blog)

One of the newer UM observatories opened as recently as 1969 and architecturally at least, has held up rather gracefully. The 1.3 meter reflector it was built to house, on the other hand, has “retired” to Kitt Peak, Arizona where it continues to perform at the McGraw-Hill Observatory.

(images via: SobaWorld and Bruce Reynolds and QCP)

Cultural milestones or disposable conveniences, observatories have played different parts at different stages of human civilization. Their remoteness – whether on towering peaks and/or away from unwanted city lights – acts to extend their staying power. Who will observe the remains of our observatories when their builders have moved on?