Historic medieval fortified city in southwest France.

Hundreds of prehistoric stones, arranged in perfect lines in a French field.

This historic, palatial theater is now one of the world’s most beautiful bookstores.

This attraction is devoted to the wonders of steam power and features a replica of one of its most public disasters.

The pedestrian traffic signals in Brazil's teeming metropolis light up with clues to nearby landmarks.

Half curiosity cabinet, half late night hotspot, this Brazilian bar is helping turn a dangerous neighborhood around.

One of São Paulo's tight urban intersections has become a haven for graffiti artists ever since a single Batman started the trend.

The bookstore with bookshelves built into unlikely places.

Museum celebrating the ocean, with the largest wunderkammer dedicated to sea exploration.

This massive blockhead sculpture hides an entire library.

The attic of a four-century-old canal house hides a clandestine church.

This historic Amsterdam bar used to accept sailor's monkeys as payment.

This city square is home to Amsterdam's oldest church and a statue honoring Dutch sex workers.

This unattributed sculpture in Amsterdam is hiding in plain sight.

Cat art as far as the eye can see.

Established in 1638 to battle the Black Death, Hortus Botanicus Amsterdam is a treasure trove of rare flora.