It’s a painted window that looks completely real, hiding on a building in the market square.

This Finnish town on the Arctic Circle is trademarked as the Official Hometown of Santa Claus.

Over 4500 valuable bibles are safely tucked away in this museum in central Oslo.

A thin golden line commemorates the deadliest terrorist attack in recent German history.

Extraordinary animals sculpted from leftover junk.

Relocated graffiti- and street-art exhibition space in a former national railway warehouse.

An abandoned amusement park turned street art gallery with open walls for visitors to spray paint.

This seemingly humble work of art—a block of limestone—conceals a daring story and an artistic tour de force.

This monumental neo-Renaissance tomb in Vyšehrad Cemetery is the final resting place for Czech cultural legends.

Czechoslovakia’s first competition pool, now a decaying ruin of a functionalist marvel.

This 15th century church is where the Pilgrims spent their last night in the Netherlands before setting sail for America.

A quiet memorial to the victims of the Soviet-backed communist regime in Czechoslovakia.

The world's largest underground iron ore mine.

A concrete Picasso in the middle of a student housing complex on the outskirts of Stockholm.

The three colorful women depict characters from a beloved children's story.

The world's largest model of our planetary system.

One of the four clock faces on this church is mismatched, in a nod to a historic slight.

A Czech shoe magnate built his office inside a giant elevator.

The ruins of a medieval bridge are visible inside a Prague Metro station.

A gigantic teapot sitting on top of a parking garage in the center of Utrecht.

An iron dragon with a long neck covered in feathery scales perched above one of Venice's most popular squares.

This island only appears in winter once the surrounding waters have frozen over.

A home for Spain's version of the Tooth Fairy, hidden in an old gas company register.

A lush vertical garden blooming in the heart of Paris.