Colorful and chaotic stacked hotel in North Holland.

The place where Czar Peter I of Russia resided in 1697 during his Grand Embassy.

This 1920s Amsterdam neighborhood was built as a giant experiment in concrete construction.

This museum inside Amsterdam's largest cemetery explores how people deal with death.

This pirate-broadcasting-tower-turned-restaurant played a rebellious role in the history of Dutch television.

An overgrown and largely forgotten cemetery lies hidden within the outskirts of Amsterdam.

This bronze statue of Martin Luther King was placed in the park without permission.

Some 80,000 Delft Blue tiles line the inside of this Amsterdam walkway.

Amsterdam's narrowest house facade is a monument to 17th-century tax evasion.

A floating cat sanctuary on an Amsterdam canal.

This basement museum explores the art and artistry of fascism.

A Dutch passageway's artistic, aquatic-themed makeover pays tribute to the capital city's famed waterways.

Europe's official "zero-level," the equator of elevation.

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

This vast collection of smoking pipes from across the world spans centuries.

This unattributed sculpture in Amsterdam is hiding in plain sight.

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

A unique collection of gilded age mechanical pianos.

Seven mini rowhouses fill the gap between 54 and 70 Westerstraat.

This impressive collection of rare books on ancient mysticism inspired author Dan Brown.

Three connected pink triangles memorialize persecuted gays and lesbians throughout history.

The spectacular history of spectacles on display.

A unique work of automotive art calls this shopping center home.

A hidden church in a hidden courtyard tells the story of the Miracle of Amsterdam.