A seven-century-old jail tells a not-so-pleasant history of crime and punishment.

The largest 19th century panorama in the world still in-situ.

This towering church is home to a world-famous organ and a treasure trove of medieval art.

Oldest Museum of the Netherlands is a true cabinet of curiosities.

Only a few walls remain of the last church the Pilgrims used before they sailed to North America.

This century-old street sign is a forgotten remnant of the old city.

A relic of the old jail still stands in its original location.

Albert Einstein would often sit in this chair during visits to the observatory to discuss science with Willem de Sitter.

A striking memorial to the Jews of Leiden who were murdered during World War II is scattered throughout the city.

This early 19th-century graveyard is the final resting place of Vincent van Gogh's mother.

Once housed in the towers of this Gothic church, this 17th century clock still ticks today.

An unassuming rod in the Netherlands was once the old standard unit of length for the entire Dutch empire.

This 11th-century castle sits so low you can't see it behind the surrounding buildings.

Graffiti covers the walls of a room where university students through the centuries have waited nervously to defend their theses.

A trio of red, white, and blue stones embedded in the streets of Leiden are markers of medieval territory and law.

One of the oldest masonic temples in the Netherlands, built in 1757.

The works of poetry's biggest names grace the walls of the city of Leiden, all carefully painted by hand.

Science meets wall art to highlight the beauty of famous mathematical equations.

Devious political maneuvering and four ancient, working telescopes are central to the world's second-oldest observatory.

A 'living museum' in Leiden, the oldest of its kind in the Netherlands.

A market built atop boats is one of the few floating holiday markets in Europe.