The world's largest indoor go-kart racetrack is hiding in Connecticut.

"Not too many people can say they've had a nuclear bomb dropped on them, not too many would want to." — Walter Gregg.

A beautiful geyser under environmental threat.

This rustic old building is said to be the most photographed barn in America.

A favorite Paris bar for U.S. expats, including Gershwin, Hemingway, and James Bond.

Got apples?

An ancient ossuary in Rouen.

Sacked by Vikings, blessed by William the Conqueror, dealt a fatal blow during the French Revolution—these ruins have seen it all.

His "Lionheart" is entombed separately from the rest of his body.

This medieval tower is all that remains of the castle where Joan of Arc was held before being burned at the stake.

This massive airship factory is so large that it has its own indoor weather.

An elegant sandstone stairway built by the WPA still connects two neighborhoods in Akron.

For decades, this waterfall remained hidden because of an artificial dam.

This campus museum commemorates a national tragedy.

Faces carved into the cliffs create an otherworldly walking trail.

Japan's largest and oldest annual procession of floats, begun in 869.

During the 1990's nearly all of the world's LSD is thought to have come from the operators of the lab once located in this missile silo.