Thousands of tourists and residents in Cologne affix "love padlocks" on the Hohenzollernbrücke Bridge to symbolize their affections.

A scandalous Art Nouveau collaboration that set Paris all atwitter at the turn of the century.

A former milk-delivery driver and his wife turn their home into a glimmering mosaic.

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

A majestic lion statue guards this Parisian botanical garden, and feeds on an unsettling item.

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

Remains of Roman amphitheater hidden in a sleepy quarter of Paris.

Hidden away in a modern library are the remains of one of the 18th century's most celebrated wunderkammers.

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

Walk upon the mementos of the dead in this Parisian courtyard paved with medieval tombstones.

Notorious artist squat renovated into legal studios.