On a winding Vienna side street, one museum has turned their windows into a monument to history’s peace-minded heroes.

A silly medieval mural preserved on the side of a Viennese house.

The solemn exterior conceals an opulent interior of this 17th century church.

An exquisite Baroque church in Vienna's old town.

These relics of the city's past now exist as a prominent modern feature.

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

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

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.

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

This 17th-century house has a long and colorful history.

An ancient Egyptian temple sits within a modern European museum.

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

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

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

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

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

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

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

Elegant marble and old vaults fill this historic Dutch bank turned office space.

An early 19th-century English style garden hidden in the Rotterdam cityscape.