Thanks to its heroic service during WWII this Soviet castle has been turned into a monument towered over by a brutalist titan.

A hospital where antique dolls are given new life.

This beautiful park on the outskirts of Rome protects the ruins of two colossal ancient aqueducts.

A completely underwater art museum sends a stark message about humans' impact on the environment.

Two World War II aircraft lie within the jungle around this abandoned runway.

This former Cyprus flight hub is now a crumbling, abandoned ghost complex.

A tour of underground Berlin takes you through WWII air raid shelters and tunnels used to smuggle people out of East Germany.

An Italian crevasse filled with abandoned buildings gives visitors a look at the world without humans.

These abandoned ruins in the middle of Jaffna have withstood centuries of tumultuous power struggles.

An ancient stone fortress considered by many to be the eighth wonder of the world.

Secret North Korean passage discovered below the world's most dangerous border.

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

The remains of the wrecked steam trawler can be found on the beach at low tide.

The villagers of the coldest inhabited place on Earth adjust to unique challenges presented by day-to-day living.

This narrow path was cut right into a French mountainside to feed the country's early naval expansion.

The convergence of two currents makes this a surprisingly pleasant getaway in the Arctic Circle.

This natural Icelandic fissure allows divers to swim right between two volatile tectonic plates.

This abandoned Antarctic research station is a Soviet ghost frozen in time.

This abandoned Antarctic base sits nearly unchanged since it was forsaken in the 1950s, just waiting for you to visit.

The remains of a doomed Antarctic plane, buried beneath layers of ice and snow, await those willing to do a bit of digging.

This ghostly Alaska village still clings to a steep cliffside despite having been abandoned for over 50 years.

Locals believe the purity of this huge, untouched Arctic lake could be the salvation of human civilization.

The stunning remnants of this wreck emerge from an otherworldly backdrop of rainforests.

The ruins of this Alaska gold mine form a gorgeous ghost town.