The video game-themed street art first popped up in the French city.

The oldest continuously operating mint in the world that has been making coins since the 9th-century.

The celebrated eyesore created by starry-eyed sweethearts.

The French leader's hat sits in a glass case at the oldest restaurant in Paris.

A surrealist timepiece by the artist of melting clocks.

This demon atop the Notre-Dame de Paris looks utterly bored.

The narrowest street in Paris.

This modest marker near Notre Dame identifies the very center of Paris.

This 400-year-old tree is actually an immigrant from North America.

This iconic Parisian bookstore doubles as the "Tumbleweed Hotel" for traveling writers.

This building was once the most magnificent mansion in Nafplio.

This legendary city has been a tourist attraction for centuries.

The hallucinogenic center of the ancient world.

Legend says this sacred tree was a gift from goddess Athena.

An ancient octagonal weather station named for the eight Greek gods of wind.

This historic structure has been used as a mosque, a barracks, a prison, a school, and a bakery.

The ruined doorway is a portal to the building's turbulent and torturous past.

This gem is often wrongly overshadowed by the larger, newer Metropolis church in Athens.

The only surviving choragic monument is a trophy awarded in 334 BC for the winning dramatic chorus.

This beautiful 16th-century necropolis marks an astonishing feat in heritage conservation.

This small town Texas cemetery is said to be the burial site of a UFO pilot who crashed in the 1800s.

A beautiful bronze sculpture by Danish designer Bjorn Wiinblad, who is indelibly tied to Dallas.

A six-foot pair of socks hangs from a drawer of the world's largest bureau.

Near the former site of numerous witch burnings, this lavish Edinburgh mainstay pays homage to Scotland's brutal history.