Built in 1922, the steeply banked concrete curves of Spain's Sitges-Terramar auto racetrack have slumbered in quiescence for the better part of a century.

Power to the people! For a century Toronto Hydro has been designing stealthy electrical substation "homes" that blend in with their surrounding neighborhoods.

Vintage science fiction has as many damsels in distress as it has lurching robots and rubber-masked aliens.

“The Cloud” is due to rise in Seoul by 2015 – that is, unless a storm of controversy centered on the design's alarming resemblance to 9/11 blows the plan away.

These 10 roving robotic explorers were designed to roll over unearthly alien terrain where no one has gone before, and where no roads await their wheels.

The holidays are nigh! The decoration pros have already spent the last 6 months carefully constructing 60 foot-high Santa Claus' to grace their front yard.

High above the Arctic Circle, the mid-1950s vintage remains of the DEW Line sit preserved by some of the coldest temperatures found outside Antarctica.

Sometimes they're poorly built, sometimes the ground is giving way beneath them and sometimes these 13 leaning towers of the world are intentionally tilted.

At least 700 cramped, mysterious tunnel systems exist beneath urban and rural Germany with many more in the rest of Europe - but what were they for?

Uncurling from a ball, deploying from a vehicle at the touch of a button, dropping beneath the surface of the water - these bridges move in unexpected ways.