This natural sea cave hides a small wonderland of natural turquoise beauty.

The remains of a Canadian train crash are now mouldering beneath layers of rust and graffiti.

A well-preserved network of cavernous tunnels have spent silent centuries removing Toronto's waste.

Railways may have forged this quintet of lovely tunnels, but now they are open to hikers.

Historic psychiatric asylum and most-filmed location in the Great White North.

An old world fairytale-land with over 350 fairy folk figurines hidden amongst 800 year old cedars.

A slice of central Asia in the middle of Berlin.

An eerie, derelict amusement park in Berlin.

Fall down the rabbit hole into a surreal journey of human consciousness "from ass to soul."

A whimsical and twisted animatronic monster tour beneath the streets of Berlin.

This World War II bunker now survives as a documentation of the Nazi regime and war crimes.

The music is over at the Ballhaus Riviera Ballroom, but the ballroom remains in haunting disrepair.

This Berlin island is home to a flock of free-roaming peacocks, as well as a historic ivory folly.

Thousands of coffin-like pillars make up this controversial Holocaust memorial.

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

A state-of-the-art medical facility from the Imperial era is now a derelict ruin.

A complicated, forgotten beacon of hope for thousands of immigrants, "Canada's Emerald Isle" lies in ruin.