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

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

This legendary city has been a tourist attraction for centuries.

The Cycladic architecture makes this Athens neighborhood feel like an island paradise hidden in the shadow of the Acropolis.

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

The ruins of an abandoned medieval city where the last Byzantine emperor was crowned.

The hallucinogenic center of the ancient world.

St Bernard de Clairvaux Episcopal Church, better known as one of the oldest European buildings in the Western Hemisphere.

A unique collection of diving equipment spanning antiquity to the present day.

This spiny beast guards an artist's village while vying for the title of largest lobster in the world.

When you can't get to the Pacific, just go to Florida.

This sculpture in the Miami Design District is one of the few public works of Virgil Abloh, an internationally recognized fashion designer and creative.

The opulent home that inspired Tintin's Marlinspike Hall and the adventures within.

This ancient theater was once the home of fierce gladiatorial battles.

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

This ancient Roman bridge and aqueduct still stands as a wonder of classical construction.

The famous winding walk at Chartres is surrounded in mystery and myth.

This former “ante-chamber to the guillotine” has been refurbished to illustrate the brutal history of French justice.

Twelve grave-faced marble angels guard the emperor's tomb at Les Invalides.

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

A surrealist timepiece by the artist of melting clocks.

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

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

France's most famous cemetery, with some of its most curious tombs.