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

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

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

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

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

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

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

Seven mini rowhouses fill the gap between 54 and 70 Westerstraat.

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

A Portuguese Jewish cemetery filled with stunning grave monuments that date back to 1614.

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

This unusual elevator doesn’t stop or slow down.

This museum inside Amsterdam's largest cemetery explores how people deal with death.

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

Sail in for a ’dam good slice.

This vast collection of smoking pipes from across the world spans centuries.

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

A man's head is enshrined beneath a statue near the first building constructed for the modern Olympic Games.

This striking sculpture of Icarus honors Greece's fallen flyers.

A grotesque collection of wax limbs depicting the symptoms of venereal disease.

The Cycladic architecture makes this Athens neighborhood feel like an island paradise hidden in the shadow of the Acropolis.

Where commuters walk through remnants of an ancient Greek necropolis.

The ruins of an ancient Roman tomb hidden in the basement of a trendy clothing store.

The oldest cemetery of modern-day Athens blends the modern and ancient worlds.