When an ancient supervolcano erupted, some of Nebraska's prehistoric animals were forever preserved in ash.

One of the best places to see wild Colonial Spanish Mustangs in the United States.

Scenic mount trashmore, Virginia Beach's most curious waterfront still has a couple of secrets.

This environmental engineering marvel keeps salt water from the Elizabeth River.

A trough of 700 strange bronze faces runs through a narrow alley in Ljubljana's old town.

A whimsical bridge adorned with decorative dragons.

The former Nazi Germany concentration camp stands as a museum to remember this dark chapter in European history.

An underground city of salt.

The fierce beast perches atop a pedestal marking where the historic City of London gates once stood.

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

A haunting monument dedicated to the Royal Naval Air Service and the Fleet Air Arm.

This massive collection of British military artifacts includes the heartbreaking personal letters of the men in the trenches of WWI.

A closed London rail station created to cart away the dead still bears the marks of attempts to make it less morbid.

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

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

This striking statue brings a scene from the African savannah into central London.

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

Giant, friendly pelicans in Central London, the most unlikely of places.

A statue of the legendary Celtic warrior queen who fought the Roman invaders stands in one of the cities she once destroyed.

Hundreds of prehistoric stones, arranged in perfect lines in a French field.

Wall after wall of this French seaside neighborhood is intricately decorated with seashells and corals.

If they push on just the right spot, even the weakest person can move this titanic boulder.

A remote hilltop covered in giant monoliths haunts the Brittany countryside.

The vast, legendary catacombs hold secrets much stranger than stacked bones.