This public library and its impressive collection of academic books have not changed since the 17th century.

One of the great math minds of the 17th century is underfoot in this 900 year old Dutch church.

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

A 14th-century church holds a unique monument to a German mathematician who dedicated his life to calculating the value of pi.

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.

People have been placing babies on these lilies for photoshoots since the Victorian era.

This historic Dutch newspaper building is covered with media-themed details—and one unrelated oddity.

The world's first transgenic bovine has been preserved at the museum where he spent his final years—though his old stable is now a cafe.

Some of the specimens on display at the Leiden University Medical Center have been helping educate physicians since the 17th century.

This Dutch art piece became a Russian icon.

A memorial commemorating the man whose name became synonymous with taking a picture in the Netherlands.

This institution has been serving up some of the best pancakes in the Netherlands for over a century.

This small museum collects the Christian remembrances which would otherwise be forgotten.

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

The remains of a medieval wall discovered in the basement of a jewelry store.

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

A massive explosion that leveled hundreds of buildings in the city of Leiden is remembered by a waterside plaque.

Unknown to many, this is where items not displayed in a Dutch history of science museum are held.

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

The remnants of a WWI naval mine that once terrorized the country now decorates a street.

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

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

This public toilet built in the famous Amsterdam School architectural style is a Dutch national monument.