The home of a 19th-century author who brought African-American folktales to the mainstream is now Atlanta’s oldest house museum.

London's smallest police station is barely the size of a phone booth.

This pump on the bad side of Victorian London betrayed a horrifying revelation about the water supply.

This pair of unsuspecting buildings are in fact the very first modern skyscrapers in Europe.

An ancient Viking runestone hidden in plain view in Stockholm's old town.

Several cannonballs of mysterious origins decorate two buildings in Stortoget's main square.

It is said that each of the white stones in the red facade of this medieval house represents the head of a murdered Swedish noble.

A wooden street sign is the last remnant of this 400-year-old alleyway.

A plaque marks the house in Stockholm where the French philosopher René Descartes lived up until his death.

A man has revenged his true love's betrayal through tears and stone genitalia.

One of the world's first dedicated bank buildings in the world is now the oldest one.

Stockholm's narrowest alley is barely over two feet wide.

This pair of gilded girls atop an Art Deco building in Copenhagen were built to function as a weather indicator.

A faded reminder of what was once a common sight in London during the Blitz.