One of the oldest masonic temples in the Netherlands, built in 1757.

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

Colorful and chaotic stacked hotel in North Holland.

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

Yup, that's a 330-foot yacht passing over the highway.

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

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

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

This cheese shop also houses a museum devoted to Dutch dairy.

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

A floating cat sanctuary on an Amsterdam canal.

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

The spectacular history of spectacles on display.

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

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

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

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

Amsterdam's Red Light District leaves little to the imagination.

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

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

The history and future of cannabis.