This impressive clifftop temple was once at the center of an international custody dispute.

America's oldest archaeological site or a muddled case of wishful thinking.

The site of Paul Revere's historic two lantern warning.

This landmark cemetery in Boston was created more than 300 years ago.

What was once a true peninsula has now been filled in, causing the water to recede and leaving many streetside "waterfronts" and landlocked "islands."

A 200-year-old bar in the historic French Quarter refuses to give up its place in history, nor its role in securing ours.

A snapshot of the city's fascinating voodoo culture.

One of the longest water bridges in the world was built over a supposedly haunted swamp in Louisiana.

Khmer Rouge's high security prison.

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

Once one of the world's great cities, Cahokia was a place of religious worship, trade and mass human sacrifice before being mysteriously abandoned.

The fifth-longest suspension bridge the world, connecting one Michigan peninsula to another.

Strange physical sensations and optical contradictions keep visitors coming back for more.

This shallow cave got its name from copious amount of human bones found inside.

Island where motor vehicles are banned -- home to the only carless highway in the United States.

"The Most Boring Road in the State."

This lighthouse and shipwreck museum keep a torch burning for the memory of the SS Edmund Fitzgerald.

This observatory comes complete with three separate telescopes and a dedicated community of amateur and expert astronomers.

These sprawling mines once served as a source of plaster and today serve as a storage facility.

This chapel on a cliff is renowned for its healing powers and was founded on the site of a supposed divine intervention.

This famous archeological mystery may be an ancient example of movable type.

A minotaur, a labyrinth, and a dubious restoration pull in visitors from around the world.

This legendary city has been a tourist attraction for centuries.

Where commuters walk through remnants of an ancient Greek necropolis.