This otherwise ordinary close on the Royal Mile constituted the end of the world for Edinburgh’s poorest residents.

17th century streets hidden under Edinburgh were once a breeding ground for the black death.

A restaurant on Staten Island showcases a different grandmother’s cooking every night.

Said to be the only museum in the world dedicated to the most classic of all blooms, the rose.

UNESCO-protected ancient burial ground.

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

Bizarrely shaped rock formations in northwest Bulgaria come with equally bizarre legends.

An architectural marvel that spans the Arda River, and has stories of a haunted past.

An abandoned saucer-shaped monument in the Bulgarian mountains.

Ruins of an early Roman Christian church dating back to the 4th to 5th centuries.

A gigantic statue of a Russian soldier watches over the ancient city of Plovdiv, a prominent reminder of the Soviet period in Bulgaria.

This ancient theater, restored in the 20th century, lives on as a venue for dramatic and musical performances.