Nearly 40 miles and 1,000 years of limestone mines under Denmark.

Repurposed space and ultra-modern construction collide to create this geometric wooden spectacle.

This imposing tower named after the mythical sword of King Arthur is considered the tallest freestanding climbing wall in the world.

This colorful artistic feature atop a Danish art gallery allows visitors to stroll through a rainbow.

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

The original home of the Lego has a huge amusement park dedicated to the iconic plastic toy.

As lake waters recede, a German village reemerges after more than a hundred years.

A century-long search for a church that was never there.

This micronation's flag honors its favorite drink, Kaffegöken, or "cuckoo-coffee."

An ultra-modern diversity park in Denmark has turned an entire city block electric pink.

The de facto symbol of Copenhagen is this bronze fairytale which cannot seem to keep its head for very long.

Swedish skyscraper with a 90° twist.

This ultra-modern wooden boardwalk turns the ocean into a swimming pool.

20-foot tall lamp mumbles Swedish to celebrate the holidays.

According to legend, this boat-shaped henge is built over the grave of a mythic king.

Vortex-shaped aquarium hosts Europe's largest school of piranhas and other ocean creatures.

Oberweissbacher Bergbahn - a broad-gauged cable car capable transfering railcars.

This unique Renaissance castle was turned into a home for Nazi occultism.

This Denmark theme park is part family attraction, part experimental archaeology project.

This chimerical bridge/tunnel appears to dead end right into the sea.

A sprawling Baroque park with 300-year-old hydro-pneumatic waterworks.

"The most colorful grottoes of the world.

A natural wonder in south Denmark.

This historic stone bridge has an entire neighborhood clinging to its sides.