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

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

High atop the Eiffel Tower is a small apartment built exclusively to entertain the science elite and make the rest of Paris jealous.

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

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

17th-century merchants in Bristol nailed their deals by placing money on these pedestals.

The oldest stone house in Paris was built by its most famous alchemist.

Richard III supposedly disposed of his nephews' bodies here in an effort to seal his claim to the throne.

Have a seat with the father of modern computing at this Manchester monument.

19th-century scientists would make the pilgrimage here to verify the precision of their measuring sticks.

The London pub overlooks where the Mayflower was moored before setting sail for the New World.

Used as an example in one of the first dictionary entries for "museum" in 1706.

On October 17, 1814, a 15-ft. wave of beer ran rampant through the streets of London.

One of England's most famous churches hides a pair of little known architectural treasures.

A giant white horse drawn on an English hillside may not have been intended to be a horse at all.

The most loyal of little dogs, or a Victorian era publicity stunt?

This skewed English house has looked like it's going to fall over for centuries.

The remains of an ancient Roman teenager are memorialized at the base of a modern London landmark.

This luxury shopping lane has been protected by its own tiny police force for over a century.

A sweet symbol marks the place where torturous executions were once carried out.

A century-old tradition has culminated in a small but singular collection of feline effigies.

One of the few standing Roman lighthouses and a labyrinth of tunnels are a couple of the secrets at this historic castle.

A open air theatre built on a cliff by an eccentric British woman.

The granddaddy of English geoglyphs dates back to the late Bronze Age.