There’s a hidden military meme engraved on the World War II Memorial.

Liechtenstein's royal family calls this medieval alpine castle home.

Milan's duomo is covered in beautiful carving including a curious "dinosaur-like" beast.

Two stone columns flank the grand Venice square, but there were supposed to be three.

One of the tallest bell towers in Italy plays a particular melody at just two times each day.

In memory of the 110 victims of ValuJet Flight 592 that crashed in the Everglades.

One of the world's earliest skyscrapers.

A creepy sculpture of a decapitated head invites viewers to see St. Louis through its empty eyes.

The Old Courthouse takes visitors on a captivating trip through St. Louis' timeline.

Quirky water tower advertises the long-gone Brooks Tomato Products Co.

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

This coastal port saw one of the most significant battles of the Civil War.

An unfinished rail tunnel that has since been used to house cheese and bats.

Bad farming practices caused this unnatural natural wonder.

These towering cliffs jut dramatically from the middle of a barren desert.

A unique bridge with an equally unique view.

The only royal palace on U.S. soil has been a territorial capitol, a military headquarters, and a prison for a queen.

This ruined fort and statue are a testament to the last king of Kaua‘i’s savvy diplomacy skills, which briefly brought Russians to Hawai‘i.

2300-year-old Roman road connecting the empire.

For patriotic Russians, this memorial honoring the Soviet soldiers who died liberating Berlin in 1945 is the most sacred location outside of Russia.

A monument to the three wars that led to German unification towers within a Berlin traffic circle.

On the Spree bank, discover one of the last reminders of a symbolic wall that divided, and was torn down by the people.

A tiny chapel clings to a precipice above Germany’s gemstone capital.

The footprint of a frustrated devil in Munich's Cathedral.