Renaissance hospital featuring a rotating door into which unwanted babies were dropped.

A plaque on the base of this statue holds a bewitching design.

An extraordinary house museum and cabinet of curiosities in the heart of Florence.

Overlooked amid the tourist bustle of Florence, this museum is dedicated to the craft of stone inlay.

The oldest operating pharmacy in the world features 800-year-old recipes.

Drink wine handed out through a window as part of an age-old tradition.

The doodles of a genius line the walls of a secret room under the Medici Chapel, where they were hidden for nearly 500 years.

This still-celebrated home was a radical architectural experiment in 3D De Stijl.

This Netherlands museum holds a gloriously mechanical collection of ornate musical automata.

A beautifully rebuilt windmill from the 17th century, situated along the Amstel River.

This plaque marks the former home of one of the first women physicians in the Netherlands.

This collection of 20th-century toys is filled with a lifelong personal toy collection brought from the U.S. to Amsterdam.

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

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

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

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 subterranean studio is filled with fascinating kinetic art.

This unusual elevator doesn’t stop or slow down.

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

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

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

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

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