Abandoned since 1998, this train station has become an oasis for urban explorers.

This old, abandoned hotel offers magnificent views.

A collection of weird and wonderful art fills a former houseplant nursery.

This giant urban staircase was built to keep the city's brave fighting men from getting waylaid in the red light district.

The "stairway to heaven" lookout tower was built to resist weather, arson, and the laws of physics.

A rare example of World War I trenches from the British front.

This abandoned Belgian fortress is purposefully being left to nature.

Hiding the longest subterranean river known in the world.

A magical and peaceful ruined Cistercian abbey in what is now southern Belgium.

A church of bones, decorated with 40,000 human skeletons.

Macabre astrological automaton clock dating to the late 1400s.

The slender brass strip in Prague's Old Town Square was used to tell time from 1652 to 1918.

This spooky statue sits outside a famous Prague theater.

A bust of Franz Kafka spins in pieces, reflecting the writer's inner torment.

The hidden lair of an alchemist rediscovered in a 2002 flood.

This tipsy office building in downtown Prague was originally called “Fred and Ginger.”

Increasingly decayed figures stand as a powerful reminder of the human costs of Czech Communism.

A saintly relic hidden in a Prague church basement.