A South African bar inside a hollowed out 6,000-year-old Baobab.

This cavern was used as a hidden hospital and safe house during the Vietnam War.

A nightmare for the claustrophobic lies hidden in Southeast Asia.

Have fun at the world's first Buddhist waterslide park.

Twice a day a speeding train passes only inches from the homes of this residential neighborhood.

This bridge made famous in a novel and on-screen wasn't actually built over the river Kwai.

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

This small roadside eatery exists in both the Northern and Southern hemispheres, as the equator runs right through it.

Once the future of underwater combat, this old sub is now open for visitors to muck around in.

Annual celebration commemorating the 1965 sighting of strange lights in the town.

This whimsical Oz-themed park had a wonderful impact on the surrounding neighborhood.

The school tested mustard gas for the U.S. Army during World War I.

A traveling postal dog covered 48 states and more than 140,000 miles, and he lives on as taxidermy, patched up with a rabbit's foot and a pig's ear.

Cold War intelligence agents monitored communist embassies from an attic in a former pigeon coop.

The actual model from the original "Star Trek" series is now on display at the National Air and Space Museum.

A painfully obvious spy house sits right across the street from the Russian Embassy.

A historic neighborhood church is reborn as a psychedelic arts collective.

For 20 years, this whale skeleton has been slowly dripping oil on the floor of the museum where it hangs.

Enjoy an overnight at an old haunted B&B site of the Borden family murders.

No one messes with the Massachusetts sacred cod, not this time...

Shelves covered in dozens of coffee bean varieties fill this North End institution.

Narrowest house in Boston.

One of the oldest used bookstores in the U.S. has been selling antiquarian treasures since 1825.

This surprising museum tells the story of modern Malaysia through the history of its law enforcement.