Once used to protect important Roman trade routes.

Used as an example in one of the first dictionary entries for "museum" in 1706.

Sofia's legislative center is continuously reinventing itself.

Underneath this Byzantinian church lies a necropolis filled with ancient tombs and the ruins of previous churches.

A Bulgarian monument to Russia's role in World War II is constantly being painted in pop culture protest.

A vast Communist-era exhibition space in the Bulgarian capital.

A striking symbol of the Bulgarian capital.

This building has two facades of clashing architectural designs.

Founded in the 4th-century, the town of Pernik plays host to the Surva Carnival⁠—a magnificent display of masked Kukeri dancers.

"Holy Wisdom" overlooks the city that became its namesake.

This century-old grotesque has a mysterious history and may not actually be a rabbit.

At 22 feet tall, these Bronze Age monoliths are some of the tallest standing stones in the United Kingdom.

This bronze statue stands throughout the year and illustrates an urgent message about the environment.

This witch statue remembers a time in England's history when fear trumped truth.

The Birthplace of the Englishman who founded the A.C. Milan football club.

A 15th-century former coaching inn forms the implausibly grand entrance to a 1980s shopping mall.

These 90-year-old murals of local kings, Vikings, and outlaws hide in plain sight in a beautifully baroque shopping arcade.

When it came to designing his own small office building, the eccentric architect wasn't afraid to show the world what he could do.

A spooky juxtaposition of caves and graves gives this legend-filled cemetery a particularly haunting vibe.

This unchanged Victorian park is rumored to have been the inspiration behind Peter Pan's Neverland.

The oldest inn in England served brew to the crusaders.

Huge winged monument in the United Kingdom.

This metal installation is a tribute to an ancient megalithic structure and South Yorkshire's steel history.

This oddly placed 15th-century church is one of only six bridge chapels left in England.