This highrise residential building looks mundane, but hides a water tower and WWII bunker.

Hidden in the forest are the crumbling, graffiti-covered remains of the factory where most of Germany's explosives were produced during World War II.

Check out engineering marvels of the past at this unintentionally retrofuturist museum.

After sitting unused for decades, this abandoned communist infrastructure became a wildlife utopia.

Once an opulent Art Nouveau hotspot, the Constanța Casino is one of Romania's most beautiful abandoned buildings.

The Natural History Museum that time forgot.

This supermarket offers shoppers a window into the past alongside their groceries.

Traveling this mountain pass reveals quaint stone buildings, stunning Irish scenery, and a bridge said to grant wishes.

An eerie collection of the surviving structures from a past celebration of the future.

Fighting the British and making game shows for over 150 years.

French scientists make up the majority of the few humans to occupy this remote island in the extreme southern Indian Ocean.

An Orthodox church inside a small "Garden of Eden" built by a man who had a vision.