An easy-to-miss garden in Boston's North End honors the mother of JFK and others who lost children in WWII.

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

This crumbling UFO is one of only a few remaining "moveable ski chalets" of its kind.

A walk-in working camera obscura produces 360-degree live images of the San Francisco coast.

The remains of an idyllic small town built for the film 'Big Fish' still stand around a rundown main street.

Secret Swing.

The Incredible Hulk, Yoda, Mulder and Scully, and many many others watch over the mean streets of Toronto.

The wooden octagon in which Huckleberry Finn and A Connecticut Yankee were born can still be visited in upstate New York.

This mill on Lake Erie appears to shrink as a viewer approaches thanks to an optical illusion.

This two-room factory has been cranking out the musical signifier of zaniness for a century.

A preserved factory in the "Home of the Carrousel" is now a museum dedicated to the classic wooden ride.

Ruins of a once-prized railroad station in New York.

Scale replica of China's ancient terracotta tomb warriors and Forbidden City are the side project of an eccentric millionaire.

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

A popular swimming hole that hides one of America's most deadly diving spots.

Abandoned railroad tunnel is home to a colony of three million Mexican free-tail bats.

A collection of massive stacked rocks in Texas includes a snarky note on the benefits of modern technology.

A recreated Stonehenge stands in a country field, complete with Easter Island moai heads standing as sentries.

This sacred cavern, 400 feet deep, is home to millions of bats and an ancient burial ground.

The petroleum industry brings you the joys of hydrocarbons and largest collection of antique oil rigs in the world.

Crumbling hotel echoes with the sounds of the '30s.

This underwater old Texas hill town only resurfaces during harsh drought.

This grimly-titled Texas cemetery is all that remains of a Wild West settlement with possibly the worst name.

What remains of the simple red brick chapel where the women's rights movement began.