A medieval church with largest and oldest collection of Renaissance frescoes in France.

There has been an astronomical clock on this spot since the 14th century.

A chapel on a volcanic core, marking the end of a successful journey.

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

A natural arch carved by a river gave its name to the so-called "Cave of Forgotten Dreams."

Historic medieval fortified city in southwest France.

This salt marsh in Southern France is as pink as the flamingos that inhabit it.

A 14th century bridge built as a fortress, where the devil lurks on one of its towers.

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

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

The water-powered carriages are long gone, but for over a century this funicular railway has been the fastest route to the highest point in Paris.

This French ghost town from World War II has been left as a memorial to German atrocities during World War II.

Statue of a decomposing prince that once held his heart in its hand.

The National Railway Museum in York is the largest railway museum in the world, attracting almost 1 million visitors per year.

This memorial to World War II's fallen airmen shows us the movements of the stars that once guided them.

Follow the original medieval paths that wind through this intriguing section of the city.

This 1,300 year old monastery built atop a single rock was once only accessible depending on the whims of the tide.

Lewis Carroll's White Rabbit or something else altogether?

This picturesque horseshoe weir was first built in the 1600s to prevent flooding in the town of Bath.

Don't be fooled by this fake medieval facade even if it is almost 300 years old.

Legend says this demonic carving inside a medieval cathedral was one of Satan's minions.

Legend says the people of Wiltshire got their "Moonraker" nickname from this small pond.

The geoglyph once sported a glass bottle eye.

This enormous "cloth of the conquest" depicts the Norman invasion of England in mind-blowing detail.