Site of a classic 19th-century physics experiment to prove the earth is rotating.

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

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

A horde of stray cats rule in this secluded Parisian cemetery under a bridge.

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

The vast, legendary catacombs hold secrets much stranger than stacked bones.

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

The world's largest second-hand graces a clock surrounded by constantly changing flower beds. 

This gallery of prehistoric red ochre art lines the wall of a scenic segment in Utah's San Rafael Swell.

Spiral-bound community recipes and antiquarian gems mingle at this small East Village shop.

This beloved marketplace mascot poops money and grants good luck.

Originally built for London’s cab drivers, this bright green hut now serves anyone a hot drink or meal.

These official units of measurement—including chains and perches—lie hidden beneath tourists' feet in a popular London hub.

The pioneer of psychoanalysis spent the final year of his life here, still seeing patients on that famous couch.

A historic London cemetery now serves as a nature park incorporating gravestones & memorial statues.

Catacombs turned marketplace.