The skull of the patron saint of lovers lies in the Basilica di Santa Maria in Cosmedin—maybe.

2300-year-old Roman road connecting the empire.

The only "Egyptian" pyramid in Europe and the legendary tomb of Remus.

The underground sanctuary of a mysterious ancient cult.

The yawning maw of this pagan visage is said to bite off the hands of liars.

Rome's semi-secret peephole vista is also a former Crusader stronghold.

A master of trompe-l'oeil creates a stunning, tourist-fooling dome out of a flat ceiling.

Hundreds of lucky felines haunt the ruins where Caesar was murdered.

The crypts of Capuchin friars decorated with the bones of over 4,000 friars, including an entire "crypt of pelvises."

A measuring mishap led to these artificial stone ladies losing their stomachs.

A quiet, semi-secret square with statues of Mahatma Gandhi, Virginia Woolf, and a conscientious objectors stone.

This ornate Victorian marketplace was the setting for Diagon Alley and the Leaky Cauldron in the Harry Potter films.

This nondescript building was the birthplace of Morris cars.

Site of the first hot air balloon flight conducted by the first English balloonist.

The beams of the New College, Oxford dining hall come with an amazing story.

Once one of the largest rooms full of books in the world, this bookstore basement is still a treat for bibliophiles.

An Oxford museum where visitors can have tea with the Mad Hatter and climb through the wardrobe to a fantasy land.

This magnificently macabre shield shows the power of chivalrous love in medieval times.

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

The lantern carried by the infamous Guy Fawkes when he was arrested while attempting to blow the houses of Parliament and the King of England to smithereens

This slice of 1960s Danish modernism does not conform to the Oxford college stereotypes.

The spot where Oxford garnered its name was also home to a medieval philosopher and includes a house covered in statues.

Legend says this public grazing area hasn't been plowed for thousands of years.

The spot where three Protestant clergymen were burned at the stake during the reign of "Bloody Mary."