French commune at the heart of conspiracies.

Trek into the depths of the cave where 17,000-year-old paintings exist alongside 400-year-old graffiti.

This stunning French estate was so lavish that it landed its original owner in jail for the rest of his life.

A well-preserved medieval village nested on a rocky outcrop and surrounded by a network of cliffs, natural bridges and canyons.

Remains of Roman amphitheater hidden in a sleepy quarter of Paris.

Historic medieval fortified city in southwest France.

This life-size replica of the Statue of Liberty's flame is also a tribute to Princess Diana by default.

This surreal statue brings a famous French novel about a supernatural cad to arresting life.

The first green space constructed on an elevated viaduct.

This massive library holds what was once the largest book collection in the world.

The most loyal of little dogs, or a Victorian era publicity stunt?

A small museum along the Susquehanna River is home to a rich collection of Native American artifacts.

Perhaps the oldest vine in North America, this sprawling plant helps make a sweet wine.

Curious crustaceans support an obelisk from ancient Egypt that now stands in modern-day Central Park.

Hundreds of prehistoric stones, arranged in perfect lines in a French field.

Seemingly grown on some other world, these New Mexico rock formations look like a disused science fiction set.

These ancient sacred grounds granted amnesty to those who managed to reach them.

This historic national park is covered in the stunning ruins of red rock pueblos.

This 4,000-foot-diameter hole is touted as "the most well known, best preserved meteorite crater on Earth."

See massive fossils that are over 200 million years old in northeastern Arizona.

Legends surround this jagged rock formation in the New Mexico desert.

135 bronze medallions mark a French meridian line which once rivaled the hotshot Greenwich timeline.

"the sweltering inhabitants of Charleston and New Orleans, of Madras and Bombay and Calcutta, drink at my well . . . The pure Walden water is mingled with the sacred water of the Ganges."

"A hideous albatross in the Hudson River Valley."