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

The largest crypt ever constructed in France was built in the 11th century on an ancient Druid sacred site.

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

The ancient tomb acts as a calendar that keeps perfect time.

The gorgeous library at Trinity College is home to remarkable treasures of Irish identity.

The oldest known university in the world is in Fez, Morocco.

God's Saharan sandbox of wrath.

An awe-inspiring mosque in Morocco with one of the tallest minarets in the world.

Thousands of narrow alleyways in an ancient medieval city make up what's believed to be the world's largest car-free urban zone.

World's largest film studio, where visitors tour the decaying sets that litter the harsh desert environment.

Mosaics, storks, and brothels—this ancient city has it all.

The hallucinogenic center of the ancient world.

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

Where commuters walk through remnants of an ancient Greek necropolis.

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

150 or so scrounged-up lamps, chandeliers, and lanterns light up this alley in central Athens.

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

The watery entrance for condemned prisoners heading to the Tower of London is still visible along the Thames.

Six ravens are kept captive (but well-fed) at the Tower of London to prevent the fall of the Crown.

Charles Babbage's proto-computer, painstakingly brought to life.

The popularity of Sherlock Holmes led to the creation of his fictional address, turning the orderly London street numbers askew.

Kings Cross Station pays tribute to its role in Britain's best-selling book series.

The oldest cemetery in New Orleans, resting peacefully for over 200 years now.

In 2010, Nicolas Cage purchased two plots in this cemetery using one to construct this strange pyramid mausoleum.