Twelve grave-faced marble angels guard the emperor's tomb at Les Invalides.

The water-powered carriages are long gone, but for over a century this funicular railway has been the fastest route to the highest point in Paris.

A museum on the history of Paris, including a set of Napoleon's toiletries, Proust's room, and relics of the Revolution.

Medieval museum built over Roman baths that features famous tapestries of a lady and a unicorn.

Behind the pink curtain, Au Bonheur du Jour, an art gallery of erotic archives.

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

A counter-culture bookstore like no other hides in plain sight in the streets of Paris.

The very center of Paris is surrounded by a bevy of strange good luck rituals.

This museum explores the history and development of dentistry and dental technology in Michigan.

Mysterious ancient boulder carved with petroglyphs in the mountains of Western North Carolina.

The tallest waterfall in West Virginia.

Follow the path behind this treat-slinging camper van to a sculpture garden in the forest.

Mystery surrounds a famous marshal of Napoleon's army.

An abandoned coal mine reached by a steep hike.

The only pachinko parlor in the United States.

The naval commander’s proudest moment in battle is memorialized in this unique tomb at Arlington Cemetery.

This isn't your average roadway—it's actually a National Park and a transportation pioneer.

Paranormal investigators claim this abandoned asylum is the most haunted spot in the eastern U.S.

Former self-sufficient mental institution now a planned community.

The collection of ceremonial and cultural objects spans many countries and hundreds of years.

The world’s largest Masonic temple was saved by the White Stripes.

These enduring murals depicting a distinctly Marxist tribute to capitalism could not even be defeated by McCarthyism.

This improbable contraption was passed down through five generations of industrious Tennesseans.

One man’s religious convictions led him to build this stone castle meant to withstand an apocalypse.