A memorial commemorating the man whose name became synonymous with taking a picture in the Netherlands.

This 17th-century house has a long and colorful history.

Böttcherstraße's bells, extolling Nordic virtues and the great conquerors of the world.

A stunning gilt bronze relief denounced by Hitler as "degenerate art"—even though it was dedicated to the Nazi leader.

Intricate metal sculpture that's half gothic cathedral, half construction equipment.

Time stands still at this serene burial ground in the center of Budapest.

The largest statue of this convex, homogeneous object with just one stable and one unstable equilibrium point.

This statue honors one of Budapest's most beloved literary characters.

A curious fountain that resembles a beloved character from the 1960s.

This sculpture in Valencia features 22,000 tiny, obsidian blue figures that pay homage to the Lady of Elche.

Eat the ultimate iteration of Portugal's most beloved pastry.

In the Monastery of São Vicente resides a gallery devoted to a breathtaking collection of seashells.

Elaborately carved to showcase the glorious wealth that the age of exploration brought to the Portuguese empire.

This unreal Portuguese palace looks as though it's made from a pile of different castles.

Elaborate tile work in this railway station tells the story of Portugal.

Over the centuries, this island paradise has done it all, from providing monks with ecclesiastical respite to sheltering an exiled Leon Trotsky.

This half-forgotten fortress was constructed by the Ottoman conqueror of Constantinople.

Climb a steep hill in 90 seconds on the second-oldest urban subway in the world.

A fountain standing as a testament to a doomed alliance.

Five sultans and their families rest in eternal splendor, teeming with overlooked beauty and drama.

While you wait to cross the street at a traffic light in Mainz, you might notice that the light is staring back at you.

A famed artist's inspiring work of peace and tolerance.

In this breathtaking canyon, crocodiles bask on boulders and glide through the murky waters.

An elaborate Mayan city shrouded in alien conspiracy revealed the tomb of Pacal the Great.