The only surviving piece of Copenhagen's 16th-century defensive wall.

Beneath Denmark's Højbro bridge, a bronze merman and his seven sons forever mourn for the mother and wife who left them for land.

The greatest amusement park in the world is wall-to-wall farting dogs, puking rats, and cows with exposed breasts for the whole family.

Built after WWII, the observatory site for the University of Copenhagen exhibits once world-class instruments.

The only "Egyptian" pyramid in Europe and the legendary tomb of Remus.

This ritzy Italian market is built around a statue of an unforgiven heretic who was burned for his belief in an endless universe.

The yawning maw of this pagan visage is said to bite off the hands of liars.

Synagogue built from the stones of Solomon's temple contains the golem of Prague.

Macabre astrological automaton clock dating to the late 1400s.

Dress up like a miner and take a slide into the disco-lit depths of this once foundational salt mine.

A subterranean house of worship carved right out of the bedrock.

This mountaintop observatory is home to one of the world's largest reflective telescopes.

A sulfuric hellscape in southern Italy.

The last moments of the ill-fated Pompeiians, frozen forever in plaster.

Erotic art covers the walls of the largest ancient pleasure palace.

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

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

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

Digger attempting to hide itself under 300 tons of rubble.

This Scandinavian island is the site of the first modern observatory.

Copenhagen's celebrated theme park and gardens.

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.

Denmark's famous pseudo-hill.