This medieval city gate is now a blend of the past and the modern world.

This sculpture marks the spot where one of the greatest Roman rulers was proclaimed emperor.

The reconstruction of this prominent building fulfilled a long-written command.

The oldest church in Mantua was buried for centuries under the facades of other structures.

Once the grandest synagogue in medieval Spain, it now stands as a memorial of the 15th-century Jewish exile.

This former papal residence was the site of an infamous incident known as the “slap of Anagni.”

This equestrian statue of Constantine the Great has been the subject of criticism for centuries.

After the construction of a nearby cathedral obstructed the view, the oldest belfry in Belgium was more than doubled in height.

This quiet chapel was central to a community of settlers who reclaimed an abandoned fort.

This museum explores the tumultuous history of Lviv under Nazi and Soviet occupation.

On a small island in the Caribbean, a statue of Napoleon's first wife has been beheaded and covered in red paint.

This hidden oasis features a stunning view of the Hudson River and the Palisades from a castle-like museum.

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

Erosion and various mineral deposits give this striking canyon its distinct color and soft appearance.

This Renaissance palace features a unique architectural design and is now home to the Ferrara National Art Gallery.

One of the most well-preserved castles in Italy also contains a rare medieval example of a port fortification.

Morocco’s modern capital was once a haven for Barbary pirates, who went so far as to establish a republic of their own.

The unusual patterns in this rock formation result from two distinct modes of weathering.

Rome's first modern graffito is all that is left of a peaceful protest from the 1970s.

The spot where Oxford garnered its name was also home to a medieval philosopher and includes a house covered in statues.

This 12th century, partially destroyed, abbey has had several owners and was seized during the French Revolution.

An 18th century fountain and two columns are all that remains of Rome's forgotten river harbor.

These paved rills bring freshwater into Altstadt and could spell wedding bells for whoever stumbles into the waters.

A stonemason's hilarious revenge came in the form of this peculiarly positioned gargoyle.