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

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

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

This unusual elevator doesn’t stop or slow down.

This museum housed in a former brothel explores the past and present of sex work in Amsterdam.

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

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

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

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

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

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

A line number in Amsterdam that will likely never be used again due to its tragic history.

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

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

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

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

This recently restored crypt was once plagued by liquefying coffins and exploding caskets.

This enormous steel tube is the biggest speaking horn in the world.

Drink among marionettes at this pub inside a historic puppet theater.

A shining memorial to a Belgian hero is said to bring luck to anyone who touches it.

Cozy basement bar sports an inventory of over 2,000 beers.

The first declared National Monument in the United States.

Yes, this monument is aware that it is about 20 miles away from the actual center of the United States.

This shallow pit was once used to send over 20,000 buffalo plummeting to their death.