The site of Japan's first major environmental disaster.

The legendary cliffside castle of three-time Voivode of Wallachia, Vlad the Impaler.

This medieval sanctuary's tree-framed door looks like a portal to a mythical realm.

An abandoned World War II tank left to rust in the downland.

A World War II torpedo launch station abandoned off the Polish coast.

The abandoned funicular tunnel was a secret base for the BBC during World War II.

A tribute to an iconic act of defiance from the Croatian War of Independence involving a small car.

A statue honors the local legend that the devil helped build St. Mary's church after being tricked into thinking it was going to be a wine bar.

The site where a nuclear bomb was lowered over 8,000 feet underground and detonated as an experiment in natural gas extraction.

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

The pits used to load the nuclear bombs onto the aircraft that dropped them over Hiroshima and Nagasaki at the end of World War II.

Infamous marsh filled with toxic waste, World War II-era London rubble, and dead mobsters galore.

One-time largest man-made structure in the world will be a park in 30 years.

This long line of cement defensive wedges is named after the famous chocolate bar for obvious reasons.

A Japanese train station built around a 700-year-old camphor tree.

This mysterious underground cave in Shropshire dates back to the 18th or 19th century.

A 70-foot-deep ice cave formed by lava from Mt. Fuji on the edge of Japan's "Suicide Forest." 

The abandoned "Red Star Train Graveyard" is the final rusting place for precious artifacts of train history.

A decommissioned Soviet airplane has been used as a movie theater and a cultural center.

A historic ruin just 20 feet away from a busy highway onramp.

A taste of the macabre Tokyo's ritzy shopping district.

Once the most densely populated place in the world, this island is now a ghost town.