A strange rock formation with numerous legends trying to explain it.

A helicopter memorial commemorating what was once the only way to access this West Berlin exclave.

Several plaster noses are hidden in plain sight around London's Soho neighborhood.

This bookstore serves recipes from the cookbooks on sale.

A pair of club-wielding guardians stand watch over London's first public clock to feature a minute hand.

A memorial for public executions that dates back to the 14th century.

A stone marker commemorating the first time sound was transmitted over wires.

Dedicated to the neverending mathematical constant, this plaque next to a park bench was sponsored by an anonymous benefactor.

At the center of London’s oldest roundabout stands an obelisk that was erected in 1771, but spent several decades elsewhere.

This gilded emblem was once stolen by a Cookie Monster impostor, who demanded a charitable ransom for its return.

Inside a Scottish castle hangs the tattered remains of a flag with murky origins and supposed magic powers.

Where a demonstration led to equal rights for one of California's most marginalized communities.

This ruined castle is said to be the legendary keep of a Viking princess.

A unique collection of Swiss art brut and naïve art displayed in an old warehouse.

The only surviving choragic monument is a trophy awarded in 334 BC for the winning dramatic chorus.

This small museum once served as a royal hunting pavilion for King Otto Friedrich Ludwig.

This small 16th-century church in Athens is almost entirely surrounded by a modern building.

The oldest cemetery of modern-day Athens blends the modern and ancient worlds.

This mystical orb covered in strange symbols is thought to have been used in ancient Greek magical rituals.

A bronze statue of Momo, a girl holding a huge ear, sits waiting to listen to anyone who needs it.

Largely overlooked, this little fountain on Museum Island is a whimsical tribute to a Prussian king nicknamed the “Fatty Flounder.”

The head of a legendary creature allegedly killed during colonial times is now on display at a local restaurant.

This very ornate Victorian gateway seems completely out of place in the modern industrial city of Warrington.

Despite the name, this ancient piece of crystal may not have been a lens at all.