A Netherlands hotel where you can sleep inside a wine barrel.

There are two dozen tanks just sitting in an open field in Lower Saxony.

This massive chapel in the middle of the Indonesian forest is both haunting and fowl.

This small hut in the middle of a parking lot was once the wooded sanctuary of the 'Hermit of Montrose.'

This lake-bound geographical marker sits at the point where three European countries intersect.

There's a 12-foot-tall replica of the Washington Monument hidden under a manhole nearby.

This iron and wood Civil War city-ship was the first vessel to be sunk by an electrically detonated torpedo.

The monument's pointy aluminum tip has been melted down by repeated lightning strikes.

An abandoned jewel of a ballroom on the top floor of Australia’s busiest rail station echoes with the sounds of a bygone era.

Vietnam's feral abandoned water park offers access to a post-apocalyptic funscape, now with fewer crocodiles.

This foolish Victorian sea fort was converted to a deluxe hotel.

A lake in the middle of the tundra of Quebec is said to be the purest freshwater lake on Earth.

A lake formed in the basin of a massive impact crater takes the shape of an unbroken ring when viewed from above.

This tiny river island switches sovereignty every six months as part of a rare, centuries-old agreement.

This odd Chilean waterfall-cano hotel must be entered via a rope bridge.

Underneath a chalk hill in France lies what Hitler hoped would be the underground launching base for a devastating new weapon.

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

Perfectly preserved ancient monastery in an impossibly dramatic location on a rocky island in the Atlantic.

Thousands of exquisitely carved stone water storage wells, hundreds of stone steps fill this exquisite medieval stepwell.

This dramatic rail curve was once the target of a failed Nazi attack.

This abandoned subway station beneath the Waldorf-Astoria hotel is allegedly used to secretly transport presidents.

The location of the last witch trials of Italy, known as "The Salem of Europe."

This abandoned lighthouse looks like a rusting oil rig, but has managed to survive a number of storms.

A French chateau, failed utopian community, odd museum, and Stonehenge replica in rural Washington State.