The Great Fire of London and the regulation of one-way streets both started in this alley.

The commemorative stone column conceals a secret laboratory.

One of the few remaining casualties of the London Blitz, this destroyed church has become an enchanting public garden.

A 1950s eccentric's vision of Eden preserved as a hiking trail.

For a time this small Florida town of less than 1,000 residents was the national leader in dismemberment.

A local landmark with generations of spraypainted messages, and more being added each day.

Florida’s half-sized replica of the Vietnam Veterans Wall.

One of the only Florida forts to remain in the hands of the Union all through the Civil War still stands as a historic stronghold.

Pensacola's UFO home has withstood many hurricanes—just as the experimental 1960s design intended.

Of course the guy with the first patent for an ice machine lived in Florida.

Art Deco and “Wrenaissance” mash-up, this recently restored royal residence has been home to kings and comes with secret monkey passages included.

A monolithic monument in Greater London.

The sculpture of the deceased cockatoo flops atop its personal plinth.

After nearly 60 years, there's still a bear at Paddington Station looking for help.

Catacombs turned marketplace.

The medieval woodcut-style artwork chronicles life in medieval London.

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

These official units of measurement—including chains and perches—lie hidden beneath tourists' feet in a popular London hub.

A mysterious shape catches the eye in this 16th-century painting.

This once-controversial and slightly confusing statue of Achilles was built out of captured cannons.

A giant scrawl on the skyline of south London.

A living memorial to the trees London lost during the Great Storm of 1987.

A mysterious carving from 17th-century London seemingly depicts a young boy sitting on a bread basket.

The bronze uniforms commemorate the vital role of women during World War II.