The old observatory in Copenhagen has a spiral corridor used as a racetrack.

The house where a Danish physicist discovered the connection between electricity and magnetism.

The final resting place of one of the brightest physicists of the 20th century.

The final resting place of the author who gave us the Little Mermaid, the Ugly Duckling, and many more beloved fairy tales.

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

Danish observation tower designed to look like a giant beer bottle.

This sublime architectural marvel is a rare example of an expressionist church.

The remains of the observatory of the Danish astronomer who first measured the speed of light.

A symbol for the opposition to nuclear power around the world.

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

Preserved "bog person" that is over 2,000 years old.

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

Iron Age "bog person" preserved for over 2,300 years.

Denmark's famous pseudo-hill.

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

This museum is a portal to 20th-century Denmark.

A public urinal so pretty, it was declared a national monument.

The facade of this bank has changed little over the centuries, including its unique welcome sign.

In the days before house numbers, these colorful signs held clues about various buildings' purposes.

Europe's official "zero-level," the equator of elevation.

A Dutch passageway's artistic, aquatic-themed makeover pays tribute to the capital city's famed waterways.

A shining memorial to a Belgian hero is said to bring luck to anyone who touches it.

This 1,300 year old monastery built atop a single rock was once only accessible depending on the whims of the tide.

In France, a medieval-style home pays homage to an intrepid explorer who discovered Québec.