A mapping error in the 19th century made loggers think this section of the forest was underwater.

The bridges portrayed on EU currency aren't fictional anymore.

The rust covering this old mine's abandoned buildings matches the red pigment it once produced.

A peat bog in southern Sweden provides a cozy and photogenic home for junked Volvos, Saabs, and the occasional American muscle car.

The ruins of an abandoned crematorium haunt an eerie deserted German cemetery.

This conical hill was built as a testing ground for an engineer known as the Glider King.

This abandoned Soviet circus is slowly being restored to its Communist-era glory.

A dilapidated psychiatric facility on the outskirts of Milan where electroconvulsive therapy was developed and Napoleon once lived.

An abandoned mine now resembles a post-apocalyptic landscape of derelict buildings and blood-red pools of water.

Colin Stokes "got a bit carried away" and built a castle that looks like something out of Tolkien.

A well-preserved Ancestral Puebloan ruin tucked beneath a desert cliff.

Plenty of old carney magic still haunts this photogenic amusement park.

This abandoned fishing settlement may well be the greenest village in the world.

This former abandoned hospital, a complex of stunning 19th century buildings, once housed 2,000 psychiatric patients.

Buildings that dynamite couldn't bring down were abandoned because of bathroom issues.

A rare pod of derelict midcentury Futuro and Venturo houses lines a semi-abandoned beachfront resort outside Taipei.

During WWII the U.S. Navy conducted primitive drone strikes on this Lake Michigan lighthouse.

A bus with a butt and biceps to put Olympic athletes to shame.

The prison where Hitler wrote "Mein Kampf," and 278 Nazis were later executed for war crimes.

This Italian ski resort rose to fame when Benito Mussolini was held prisoner there and then rescued by the SS.

An ancient Roman theatre restored to its former glory in the Spanish city of Cartegena.

A public park off the beaten path with a beautiful waterfall and 13th century Cistercian abbey.

Sacked by Vikings, blessed by William the Conqueror, dealt a fatal blow during the French Revolution—these ruins have seen it all.

This tiny island featuring 9th-century Viking ruins is only accessible at low tide.