Climb to the top of its spiral spire for spectacular views of Copenhagen.

Opulence and fantasy collide in this royal chair which is supposedly made with unicorn horns.

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

Visitors are treated to a stained glass kaleidoscope interior inside this work of art.

This Polish cave has housed a dragon, a brothel, and an enduring legend.

This grubby wall is said to be one of the Earth's esoteric energy centers.

St. Mary's features one of the most spectacularly decorated cathedral interiors in all of Europe.

This vast masterpiece of Moroccan architecture spreads across 20 acres.

This alley off Edinburgh's Royal Mile contains remnants of the city's seedier history.

These steps offer a breathtaking view of one of Europe's most besieged fortresses.

A labyrinthine network of chambers with a storied past hides below Edinburgh's South Bridge.

A two-inch thick solid brass rod that extends an astounding one kilometer straight into the earth.

An approximately 500 million-year-old rock outcropping covered in fossilized bacteria.

A small cave hidden deep within the Jenny Jump State Forest.

These elaborate gothic monuments honor Verona's medieval lords.

Renowned mathematician and physicist Carl Friedrich Gauss once worked at this observatory.

This strange sculpture is an enigmatic icon of this medieval German town.

This cheeky statue of a man defecating gold coins graces the facade of a medieval guildhall.

A 1:2 billion-scale solar system leads visitors into this German university town.

It commemorates one of the world's earliest telegraphs.

The Goose Girl of Göttingen, Germany might well be the most kissed girl in the world.

A comedic homage to a beloved German actor.

Not far from the more famous House of Juliet, visitors will find the supposed residence of her lover.

One of the oldest libraries in the world is still operating and contains the oldest existing document in the Italian language.