This influential Renaissance-era library was once the haunt of kings and monks.

Originally used to sell brandy, the bull-shaped billboard became an iconic symbol of Spain.

A rare set of strings by famed instrument maker Antonio Stradivarius is on display in the Royal Palace.

This historic fountain is a favorite neighborhood meeting point.

Stockholm's deepest subway station is also a stunning ecological wonder.

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

Now a hotel, this former bank was the site of a robbery that spawned a psychological phenomenon.

This statue and park honor the Swedish chemist Jacob Berzelius, one of the founders of modern chemistry.

Sweden's oldest animated sign is still lighting up the skyline today.

This gem from the industrial age helps visitors and residents alike traverse hilly Stockholm.

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

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

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

This massive blockhead sculpture hides an entire library.

This statue of the great Argentinian car driver is located near a famous curve of the Monaco Grand Prix.

This embalmed man is one of the best preserved mummies from the Canary Islands.

These ancient artifacts are a testament to the enduring significance of the bull in Spanish culture.

This enigmatic artifact is a rare depiction of an ancient Iberian noblewoman.

An iconic and controversial ancient Iberian funerary urn with a hauntingly penetrating gaze.

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.

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

The art museum is decorated with creatively remodeled pre-Nazi swastikas.