A deadly ancient portal to the underworld.

These tombs were built into the side of a mountain so that ancient angels could reach the dead.

In this historic region, homes and churches are carved into ancient volcanic rock formations.

This historic fort overlooks Montevideo and appears on Uruguay’s coat of arms.

This demon atop the Notre-Dame de Paris looks utterly bored.

The celebrated eyesore created by starry-eyed sweethearts.

Built in 1347, this belfry is one of the oldest in the world and survived intense bombing during World War I.

Before this bridge was built people had to wait for the ferryman, an annoyance that, the story has it, gave the town its name.

Medieval Danse Macabre Fresco in Northern Brittany.

A beautiful lighthouse with as many steps as days in the year, as many windows as weeks, and as many levels as months.

A castle-like sea fort from the 17th century is now a museum to oyster farming.

Exquisite examples prehistoric bas-relief carvings.

The great Italian Renaissance painter was laid to rest here in the Chapel of Saint-Hubert.

An image of the legendary saint stands in the shadow of a cathedral she liberated.

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

The remains of this castle, known as the Witch’s Eye, watch over the Thur Valley.

Lady Liberty's original designer installed a little clone in this French fountain.

Guests can stay at a hotel in the former French abbey where lie the tombs of King Henry II and King Richard the Lionheart.

Folklore and history carved into Brittany's coast.

Resting on a hill overlooking the coast, these medieval ruins look completely deserted save for their restored chapel.

This triumphal arch celebrating the Sun King's conquest of Lille is a masterpiece of military architecture.

From carts to cars, this leftover Roman bridge in France has managed to survive for centuries.

For over 300 years this little carving has been the city’s good luck charm.

Remains of the artificial harbours invented for the Allied invasion of Normandy can still be seen at sea.