Huge winged monument in the United Kingdom.

Twice a day this ancient path disappears with the tides, leaving the Holy Island of Lindisfarne out to sea.

Eighty million natural history specimens call this gargantuan museum home.

Morocco's Argania trees are infested with nut-hungry goats.

Founded as a refugee camp, now a popular tourist spot.

Traditional 11th-century outdoor tannery.

Thousands of narrow alleyways in an ancient medieval city make up what's believed to be the world's largest car-free urban zone.

The other side is actually green.

World's largest film studio, where visitors tour the decaying sets that litter the harsh desert environment.

A blooming house of worship for the masses.

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

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

A Parisian cemetery where the elite and artistic are interred beneath an eccentric collection of tombs.

Paris' fabled purveyor of exotic taxidermy and natural history curios.

The celebrated eyesore created by starry-eyed sweethearts.

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

A series of abstract, silly sculptures represent the works of a great modern classical composer.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

The first green space constructed on an elevated viaduct.

France's most famous cemetery, with some of its most curious tombs.

From carts to cars, this leftover Roman bridge in France has managed to survive for centuries.

This ancient theater was once the home of fierce gladiatorial battles.

This ancient Roman bridge and aqueduct still stands as a wonder of classical construction.