These mosaics were created more than half a millennium ago and feature various animals.

According to Greek mythology, this natural spring is the home of a freshwater nymph.

The accidental discovery of this gilt bronze head led archaeologists to find the Roman Baths in the city of Bath

The only pub in the world surrounded by an ancient stone circle.

A diminutive statue that was inspired by the sculptor's own daughter.

The holes in this wall provide a glimpse into Jewish life in Budapest, both past and present.

Uh, pardon me, ma'am, but I couldn't help noticing that there's a Columbo statue in the middle of Budapest.

A trail of iron footwear stands as a monument to the thousands executed along this riverbank during WWII.

A unique hotel for the artistic soul.

This watchtower once presided over the Berlin Wall.

Ancient human remains unearthed around the iconic monument.

The longest hedge maze in the world.

Famously misunderstood wonder of the ancient world

The "dragon babies" of southeastern Europe.

A miniature train-ride through Slovenia's largest cave system.

The fairy tale castle of the "fairy-tale king."

An ancient and majestic fortress that played an integral role in Portugal's road to independence.

This unreal Portuguese palace looks as though it's made from a pile of different castles.

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

Breathtaking and huge 430 year old maps of Italy.

Amsterdam's former hotspot for public executions and dissections.

This city square is home to Amsterdam's oldest church and a statue honoring Dutch sex workers.

A focal point of the Cuban government, this city square features one of the most iconic images in the country.

His music once banned in Communist Cuba, John Lennon is now immortalized in bronze by Castro, who considers Lennon a "fellow dreamer."