Sail in for a ’dam good slice.

A Portuguese Jewish cemetery filled with stunning grave monuments that date back to 1614.

A beautifully eclectic mix of architectural styles.

Famed for its pie, this eatery has a hidden tunnel that allowed Catholics to secretly walk to church during the Reformation.

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

This 22-floor tower's Skydeck offers panoramic views of Amsterdam.

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

An ancient passage filled with stalls selling used books, once frequented by Vincent Van Gogh.

The world's first zoo for microbes collecting the horrible and wonderful things living on and around us.

A curious collection dedicated to human and animal anatomy and pathology.

This gorgeous reading room houses the oldest and largest art history library in the Netherlands.

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.

Museum preserving torture methods from the past.

An Amsterdam street lined with antique shops each one dedicated to a different obscure collection.

The world's only museum devoted to the wonders of fluorescence.

Inside this museum, the history of the Walt Disney Family empire is on full display.

One of the last remnants of the city's Chinese nightclub scene is now a dive bar selling killer mai tais.

A historic hotel that made a cameo in Hitchcock's classic film has no intention of letting guests forget its fame.

This 19th-century church is now a popular roller rink.

The oldest burial ground in the city, final resting place of city founders, Ohlone natives and murderers alike.

San Francisco's urban bison herd has persisted in the face of extinction, development, and disease.

The randomness of this wall of lava lamps helps encrypt up to 10 percent of the internet.

A collection of 20th-century automata, penny arcade games, and musical contraptions.