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

An underground city of ancient quarry tunnels hid thousands of Allied soldiers in WWI.

A monument to the thousands of Canadian soldiers who died capturing the French ridge during World War I.

A daring D-Day assault by U.S. Army Rangers is commemorated atop the high cliffs of this strategic point.

A memorial to the nearly 10,000 American soldiers laid to rest on the beaches of Normandy during WWII.

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

This 3,500 pound obelisk was constructed with more than 1,000 reclaimed guns.

Books bound in human skin and H. P. Lovecraft's letters are among a few of the treasures this library has to offer.

This 150 foot seven-tiered cascading waterfall is one of the hidden gems of the White Mountains.

A long-forgotten Victorian swimming hole is still a fun spot for a dip.

The highest point in the state of New Hampshire, and while unlikely "the worst weather in the world," it sure seems that way to hikers.

Near the summit of Mount Washington, a stone monument remembers a life lost to one of the mountain's infamous storms.

Visitors dating back to the 1600s carved their marks in the stones of the iconic tower.

Explore this medieval cathedral by trying to spot all the malevolent monsters hiding in its beautifully colored windows.

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

Before the electric telegraph, a chain of stone towers carried messages across France.

One man's stunning attempt at eco-friendly living.

A sandstone block marks the alleged spot where the legendary writer was conceived.

Wander among free-roaming storks at the sanctuary that helped save them from local extinction.

A copy of the Statue of Liberty greets visitors to the birthplace of Auguste Bartholdi.

The castle was reconstructed to fit Kaiser Wilhelm II's romanticized vision of the Middle Ages.

An ancient monastery, a locked room, and a mysterious book heist.

Today this former Nazi concentration camp stands as a poignant memorial to the victims of fascism, and a warning from history.

These ramparts, once lined with towers, were constructed in defense of Beaune.