The longest living non-clonal organisms on Earth.

These remote Florida islands have a history of sea turtles and sunken treasures, and one of the world's largest coastal brick fortresses.

The unusual patterns in this rock formation result from two distinct modes of weathering.

Legend has it the lovelorn tears of a princess and a shepherd boy formed the blue and green twin lakes in the Azores archipelago.

Eat the ultimate iteration of Portugal's most beloved pastry.

This enormous censer uses a pulley system installed over 400 years ago.

The oldest Roman lighthouse still in use.

This life-size replica of the Statue of Liberty's flame is also a tribute to Princess Diana by default.

One of Jeff Koons’s largest sculptures and his first commemorative work.

This red light district plaza memorializes the Fab Four and their historic connection to the area.

You can spot this teeny tiny stained-glass window from the Bonifacius bridge.

The compass on its front was a handy tool for 17th-century merchants who needed to know the direction of the wind.

A beer pipeline runs beneath Bruges.

The world's largest reflecting pool is just two centimeters deep.

This picturesque horseshoe weir was first built in the 1600s to prevent flooding in the town of Bath.

This restaurant's specialty is "a major enigma for food historians."

Famously misunderstood wonder of the ancient world

A replica of the steam engine that hauled Queen Victoria's Royal Train is on display at Windsor.

At just 51 feet and 10 inches long, it's the shortest street in England.

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

A unique tribute to the millions of animals who served and died for the British military.

Legend says these colorful, invasive residents are the descendants of birds released by Jimi Hendrix.

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

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