An illuminated manuscript comprising the life's work of a lone monk, inexplicably decorated with a portrait of Satan himself.

When you enter this complex it is like walking onto a Sci-Fi film set.

This amazing example of Valencian Art Nouveau looks more like a cathedral than a public market.

Across Valencia lie the remains of three ancient fortifications built centuries apart: a Roman enclosure, an Islamic expansion, and a medieval Christian wall.

From grand battles to daily life, this Spanish museum offers a view of world history in miniature.

This ancient amphitheater was restored in the early 1990s.

A plaque bearing the names of those who dedicated themselves to protecting Budapest's Jewish population during World War II.

The metal leaves on this tree are engraved with the names of Holocaust victims.

Some of the greatest minds in the history of Hungarian art and science converged in this café.

This off-beat, quirky communism-themed bar isn't afraid to poke fun at its history.

The scars of a remarkably organized public protest to save 13 elm trees are still visible in this Stockholm park.

A king's bloodstained shirt is among the gruesome collection of artifacts displayed below Stockholm's Royal Palace.

Stockholm's tiniest statue is of a small boy looking at the Moon.

A 130-year-old urinal is the oldest of Stockholm and perhaps all of Sweden.

This small museum nestled inside a souvenir shop is dedicated to Sweden's most well-known toy.

An ancient Viking runestone hidden in plain view in Stockholm's old town.

Several cannonballs of mysterious origins decorate two buildings in Stortoget's main square.

It is said that each of the white stones in the red facade of this medieval house represents the head of a murdered Swedish noble.

A plaque marks the house in Stockholm where the French philosopher René Descartes lived up until his death.

Dine on food tied to Viking history and legend at this subterranean Stockholm spot.

A wooden street sign is the last remnant of this 400-year-old alleyway.

Stockholm's narrowest alley is barely over two feet wide.

One of the world's first dedicated bank buildings in the world is now the oldest one.

A man has revenged his true love's betrayal through tears and stone genitalia.