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.

The oldest amusement park in the world has been providing a nice spot to have some fun since the 1500s.

The northernmost point in Denmark is a turbulent sandbar created by two clashing seas.

An enormous playhouse designed to look like 21 stacked Lego bricks, with another 25 million colorful Legos inside.

The world's largest maze is a nature park with nearly 200 decision points.

Museum on earth sciences featuring a recreation of a famous curiosity cabinet.

This Danish rock field is actually a sprawling ancient cemetery holding the bodies of 700 Vikings.

A collection of noses tucked inside an art museum reveals how times have changed.

The world's greatest slide descends 18 stories from this looping mountaintop viewing platform.

A steampunk-styled three-floor factory churning out art, activism, and electronic beats.

This tipsy office building in downtown Prague was originally called “Fred and Ginger.”

Buried five stories underground, this Soviet bunker is packed with gas masks and Cold War paraphernalia.

Europe's largest natural bridge has a 19th century royal chateau built into its side.

Bohemian paradise covered in majestic forests.

This Prague museum collects brutalist relics and memories from the country's former Soviet rule.

This "mathematical tower" was an observatory, early skyscraper, and place to reflect on all of nature and the cosmos.

A history of heat is on display at this unique Austrian museum.

The beautiful, ornate weather station is the most popular geocache in Salzburg.

Disused seaplane hangar gets a second life as the jaw-dropping home of Estonia's museum of maritime history.

The secret cells in the basement of the KGB's Estonian "Grey House" have been preserved as a grim Cold War museum.

Once standing on solid ground, this slender beacon is a victim of the very shoreline it was charged with announcing.

Man-made mineral caves house massive bat colony.

This disappearing geyser has been attributed to witchcraft, but really it's all about rainfall.