The headquarters of a secretive order is also a beautifully-designed park.

The walls of America's oldest masonry fort famously "swallowed" cannonballs.

After the attack on Pearl Harbor, rocks and fossils from every U.S. state were collected into a pyramid of national unity.

A garden oasis filled with flowers mentioned in the works of William Shakespeare.

This "zoo" is a cross between a junkyard and a sculpture garden, featuring animals you won't see anywhere else.

This impressive Boston holy house is the American mecca for Christian scientists.

Giant heads occasionally litter the industrial Houston neighborhood where sculptor David Adickes has his studio.

Home to the largest urban bat colony in North America, estimated at 1.5 million bats.

Strange red rock formations that have been attributed to a higher power for hundreds of years.

The Denver airport is guarded by a 32-foot-tall sculpture of a demonic horse.

Community bookshelf of 25-foot-tall book spines.

After nearly 60 years, there's still a bear at Paddington Station looking for help.

Museum on earth sciences featuring a recreation of a famous curiosity cabinet.

The old observatory in Copenhagen has a spiral corridor used as a racetrack.

The de facto symbol of Copenhagen is this bronze fairytale which cannot seem to keep its head for very long.

The sci-fi villain is a little-known inhabitant of the U.S. capital's largest cathedral.

South Dakota's oldest operating brewery is housed inside a historic firehouse.

The only freestanding table rock formation east of the Mississippi.

A vast city of the dead, where the deceased outnumber the living by more than a million.

Rodin's famous depiction of Dante's 'Inferno', amidst a sculpture garden of many of his other works.

A hidden world of exotic succulents and cacti.

Guarded by the Angel of Grief, the Stanford family tomb attracts an odd mix of halloween revelry and somber contemplation.

The largest permanent Monopoly board makes one of the longest games even bigger.

An extensive collection of ancient Egyptian artifacts and mummies.