A bizarre house filled with an astounding array of collections.

The final resting place to 300 Victorian-era pets hides inside the city park.

No need to strap in for a "ride" on this walkable roller coaster.

This massive steel pyramid can be entered by a set of jagged steps that let visitors stand in its heart.

Danish tourist destination well known for open stalls where vendors sell marijuana on the street.

Copenhagen's celebrated theme park and gardens.

Want to properly offend a king? Sculpt a giant hill figure in chalk of him riding out of town.

This little museum is making sure that the art and history of the graffiti sticker is not scraped from history.

This wildly-tiled artist's palace is a living and growing account of the creator's life, loves, and labors.

Immortal combat in a Moscow museum.

These warring psychedelic crags commemorate an unsuccessful military operation.

This extremely narrow tenement boasts a maximum occupancy of just two.

A store full of vintage and indie toys designed to bring out the kid in even the crustiest of adults.

Four alabaster giants contemplate the tides on the shore of Denmark.

Op-art architecture designed for happiness.

Abstract dinosaur models in London.

A 550-square-meter micro-nation off the coast of Britain.

An old hill fort covered in over 100,000 crosses is a symbol of Lithuanian nationalism and beliefs.

Space-age monument to an early 20th-century uprising.

This stunning, out-of-the-way Croatian monument commemorates a community's uprising against occupying fascist forces.

Stone pillars and a petrified wedding party in the hills of North Macedonia.

This memorial park stands on the site of one of the largest mass executions of the Second World War.

A giant portrait of an ancient king looms over the river.