Debatably clever, or just plain honest hotel advertised as "The Worst Hotel in the World."

The last of Amsterdam's original sea level markers remaining in place.

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

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

This large copper bolt represents the benchmark for measuring sea levels in most of Europe.

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

The former headquarters of history's oldest megacorporation.

A collection of biblical memorabilia.

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

A set of seven houses, each built in a style that represents a European country.

In the days before house numbers, these colorful signs held clues about various buildings' purposes.

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

The former home of a mad diplomat is said to still be marked in bloody, arcane scrawls.

A rare tour of an aristocrat's private home reveals valuable 17th-century paintings from artists like Rembrandt.

This massive mural by famed pop-artist Keith Haring was hidden for almost 30 years until its 2018 rediscovery.

Amsterdam's former hotspot for public executions and dissections.

A poignant museum dedicated to the history of the Dutch resistance against Nazi occupation

Tucked in the back of a flower shop, its collection details the fascinating history of the Netherlands's iconic symbol.

A unique collection of gilded age mechanical pianos.

The world's oldest Jewish library was founded by Sephardic Jews in 17th century Amsterdam.

A public urinal so pretty, it was declared a national monument.

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

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

One of Amsterdam's narrowest houses is located right across the canal from its widest.