A wall of chewing gum moonlights as collective art.

A walk through the historic city center, under the streets of Seattle.

This colorful gate stands as an entrance to the walled city of Old San Juan.

A park where people have been going to feed friendly pigeons since the 18th century

This chapel on a cliff is renowned for its healing powers and was founded on the site of a supposed divine intervention.

This tiny home was originally a narrow alleyway.

The first public building in Savannah to offer air conditioning was a luxurious cinema that still operates today.

An early-19th-century hotel with a past that is steeped in the Civil War.

This quirky curiosity shop takes its cues from the world's bazaars.

The popularity of Sherlock Holmes led to the creation of his fictional address, turning the orderly London street numbers askew.

This tribute to the fictional detective stands at the famous literary character's address.

A commemorative plaque at the door pays tribute to an "American Patriot" known for his betrayal.

London's last remaining public soapbox site has seen speeches from Karl Marx, Vladmir Lenin, and George Orwell.

The lantern carried by the infamous Guy Fawkes when he was arrested while attempting to blow the houses of Parliament and the King of England to smithereens

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

After just one epic test blast, this literal loose cannon proved too explosive for combat.

A white oak with property rights.

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.