Historic fortifications form the boundary of Vatican City, but it’s not entirely surrounded by walls.

Architecture lovers won’t stop touching the National Gallery's 19.5 degree marble prow.

Pulled from the rubble of one of the worst modern tragedies, a steel crossbeam became a symbol of hope for New Yorkers.

Touching this 18th-century Scottish philosopher’s toe allegedly conjures good fortune.

This beautiful deer park was built so King Charles I and his court could go hunting while escaping a deadly plague outbreak.

The "lost friend” is the most famous of the six moai statues that were removed from Easter Island.

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

This macabre masterpiece of a mural is one of Francisco Goya's "Black Paintings."

Coast along one of Japan’s mountain railways for coveted views of magnificent hydrangeas.

One of New Jersey's oldest surviving buildings still bears the mark of our former British overlords.

This chimerical bridge/tunnel appears to dead end right into the sea.

The Jewish section of the famous Boothill Graveyard was abandoned for nearly 100 years.

This giant disembodied horse head seems to balance impossibly on its nose.

A glittering Thai Buddhist temple in suburban Pennsylvania.

Graffiti from the 16th and 17th centuries cover the walls of this part of the Tower of London.

This memorial to World War II's fallen airmen shows us the movements of the stars that once guided them.

Home of the golf club used by Alan Shepard on the moon, and more artifacts from the sport's history.

The only "Egyptian" pyramid in Europe and the legendary tomb of Remus.

The first island in the world designated a light-pollution-free astronomical observation point.

Local lore claims this park is named after a young woman who jumped off a cliff.

The mysterious canine hides atop a drain pipe on the back of the building, some say as a sneaky shoutout to Yale.

The final resting place of many of New Jersey's most famous residents, including U.S. history's most in-vogue antagonist, Aaron Burr.

A bronze monument to the infamous radio broadcast in the real New Jersey town where the fictional Martians crash-landed.

New Jersey's last historic covered bridge was rebuilt from pieces of the original 19th-century structure.