This stone once marked the boundaries of Liverpool's medieval markets.

This emotive sculpture was originally created for the 1878 World's Fair.

This bridge was constructed from the rubble of the infamous Bastille.

Natural history museum celebrating biodiversity with a parade of taxidermy animals.

The narrowest street in Paris.

Original cabaret handbills, posters, and feline artwork are a purrfect highlight of the Museum of Montmartre.

Medieval museum built over Roman baths that features famous tapestries of a lady and a unicorn.

This statue was given to France by the United States to commemorate the centennial of the French Revolution.

Site of a classic 19th-century physics experiment to prove the earth is rotating.

An "inside out" building in the historical center of Paris, featuring Europe’s largest modern art museum.

Ernest Hemingway was the first to sign this colorful wall covered in thousands of celebrity signatures.

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

A preserved portion of an ancient Athens barrier is displayed in a hotel basement.

Where commuters walk through remnants of an ancient Greek necropolis.

Heralded as the world's first theater, these ruins are often overlooked as they reside in the shadows of the Acropolis.

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

This ancient Greek place of assembly and marketplace is being revealed layer by layer below the modern Athens cityscape.

A 2,000-year-old computer demonstrates remarkable engineering and astronomical precision.

This legendary city has been a tourist attraction for centuries.

Step inside an ancient beehive tomb built for a mysterious cult hero.

This slumbering beast honors the Bavarian soldiers who died in Greece during a 19th-century typhoid outbreak.

This 15th-century island fortress later served as home to the executioners no one wanted to live near.

A fairytale island floats in the middle of Italy's little-known Lake Orta.

For hundreds of years, this huge figure has been blessing visitors before they explore his body.