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

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

Historic medieval fortified city in southwest France.

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

On this romantic tidal island reachable only at low tide the tomb of a famous French writer overlooks the sea.

A whimsical cottage from the 1300s with a preserved Victorian-era post office inside.

Cornish legend says these ancient circles were people turned to stone for playing hurling on a Sunday.

A massive flood devastated this seaside town, causing many to speculate about whether the government had figured out how to influence the weather.

This ancient bridge made of stone slabs is said to be reserved for the devil to sunbathe.

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

The plaques around this 19th-century structure recall some rather strange tales.

The geoglyph once sported a glass bottle eye.

Europe's largest prehistoric mound – burial site of a legendary king?

The largest stone circle in the world has ended up bringing up more questions than it has answered.

This logic-defying 16th-century Tudor manor still stands to the delight and astonishment of onlookers.

The western face was supposedly left clock-less to snub the Welsh.

Mysteriously stacked storefront paths give this medieval British town an iconic style like none other.

One of the few surviving street funiculars in the world.

The highest peak in Wales is said to be the final resting place of a giant killed by King Arthur.

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

Traveling this mountain pass reveals quaint stone buildings, stunning Irish scenery, and a bridge said to grant wishes.

The largest of only eight working transporter bridges left in the world.

This 17th-century pub once had a hole in its wall so the neighboring blacksmith could easily access beer.

One of the highest Roman forts in Britain is set amid dramatic scenery on a notoriously difficult road.