The first green space constructed on an elevated viaduct.

This Parisian fountain is a little bit fantasy and a little bit nightclub.

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.

Known as the "Dodo Manège," this carousel features a herd of animals that have disappeared—or may be gone soon.

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.

Egyptian Revival movie palace abandoned for decades and restored in 2013.

Down a cobblestone alleyway is a museum dedicated to Romanticism, with a secret garden.

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

A surrealist timepiece by the artist of melting clocks.

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

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

Paris' linguistic guide to the international language of, yes, love.

A museum of carnival attractions where you are invited to ride the rides.

The oldest stone house in Paris was built by its most famous alchemist.

One of the last free public hot springs is decorated with hippie art.

No one's quite sure why there's a metal megaphone bolted on two rocks in the middle of the Mojave Desert.

Located in the remote Monitor Valley, this travertine bowl contains a scalding pool of water.

The liveliest ghost town in the state.

This giant temperature attraction created some giant electric bills.

This former shopping outlet is now adorned with beautiful graffiti and murals.

This massive crater in the middle of nowhere was used to train astronauts for moon landings.

The highest dunes in California are the most likely place in the area to hear the Singing Sands.

Smooth basaltic rocks tell a tale of ancient glacial waterfalls.