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

Amsterdam's former hotspot for public executions and dissections.

A unique collection of gilded age mechanical pianos.

This unusual elevator doesn’t stop or slow down.

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

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.

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

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

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

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.

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

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

The spectacular and eerie moss-covered grave site of 19th-century Belgian merchant.

The oldest cemetery in Belgium.

Explore 400,000 years of humans' "battle against darkness" in this offbeat but thorough lamp museum.

The bronzed skull of a beheaded traitor was affixed to the city gate in the 17th century.

This former Masonic lodge has been transformed into part museum, part bar, all awesome.

A preserved college lock-up that recalls a clubhouse approach to discipline.

Oddly enough, a pair of Wolfs funded the construction of this Little Red Riding Hood sculpture.