At 207 feet, one of the world's longest continuous escalators.

These Great Lakes sea caves accessible by boat in the summer turn into temples of ice reachable by foot in the winter.

This rare triple-jurisdiction drawbridge passes through Virginia, Maryland, and Washington, D.C.

The rooster who crossed the road lives on forever in Takoma Park, Maryland.

The land is home to swimming ponies and a legendary 18th-century treasure.

A museum dedicated to exhibiting remarkable outsider art.

These crudely shaped folk giants may be the the second most photographed statues in the U.S.

Equal parts record-breaking temple to consumerism and bizarre fun park, it's more than you think it is...

A 60-room castle constructed by a horse-racing heir.

This Rhode Island mansion was a stand-in for the exteriors of Collinwood in the original "Dark Shadows" series.

The last holdout of a pre-Civil War rebel who took the matter of slavery into his own hands.

Over two centuries old and counting, Madrid's massive botanical garden contains one of Europe's only desert environments.

This tiered waterfall is so pretty it may cause visitors to cry tears of their own.

A condom-covered Thai restaurant that is more concerned with birth control than food.

The headquarters of the Mahanikai school of Buddhism, Thailand's largest monastic order.

Home to more than 13,000 pieces of war memorabilia and military equipment.

Khmer Rouge's high security prison.

5,000 skulls in memorial to those killed by the Khmer Rouge.

Limestone caves in the Cambodian countryside, once the site of genocide, now a place of peaceful beauty.

A battle between nature and architecture in the Cambodian jungle.

Monument to a brutal, ineffectual US bombing campaign and a sobering reminder of the human cost of the Vietnam War.

Home of the unusual art of water puppetry, one of Vietnam's oldest curiosities.

This tipsy office building in downtown Prague was originally called “Fred and Ginger.”

Budapest's Communist-era statues, banished to the suburbs.