Potentially even more challenging than harsh heat and dust storms of Burning Man: Emphermisle, a temporary autonomous zone on the water.

A colorful cart with a rooftop stage and a built-in seating area for chess based on 16th-century pageant carts promotes the Waterloo district of London.

Guess what city - or even what continent - the geography game GeoGuessr has dropped you into using nothing more than images from Google Maps.

Tensile treehouse shelters take extreme camping further, allowing you to loft a portable residence amid any forest, above water, mud, sand or sheer void.

If you're feeling flush, these images of luxurious island resorts might incite you to book a vacation; the rest of us will have to settle for photos and dreams.

The ancient city of Nan Madol is an engineering marvel, built on top of a coral reef in the Pacific Ocean. No one knows how the builders moved the massive rocks.

Precariously perched on mountain tops and into the sides of sheer cliffs, these dramatic monasteries are difficult to reach, but offer incredible views.

A private city surrounded by white walls is envisioned as a crime-free paradise away from the realities of homicide-plagued Guatemala City. But is it realistic?

After the fall of communism, entrepreneurs in Sofia, Bulgaria, beat high storefront rents by opening tiny convenience stores around basement windows.

Yes, you can spend the night in Luke Skywalker's home, see the hermit habitat of Obi-Wan Kenobi up close, and view other remnants of the original Star Wars movie.