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

An effigy of a trapped paratrooper dangles from a Normandy church to commemorate one remarkable D-Day event.

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

The ancient dwellings of the Puebloans, located in the cliffs of majestic mesas.

The second-largest cave chamber in the world was discovered in 1898 by a 16-year-old and a friend known as "Pothead."

Monuments don't get much more metal than these three giant viking swords planted in a Nordic hill.

Single runway interrupted by a busy road that cuts across its middle.

This "preacher's pulpit" once used for pagan ritual, is home to a new, and dangerous ritual.

The lost American era of gunfighters, bandits, Indians and steam trains is recreated in Sweden.

A golden plaque marks the site of the mysterious unsolved assassination of the former Swedish prime minister.

Sweden's "good old days" painstakingly re-created in a model village.

It houses the remains of a 17th-century version of the Titanic.

The world's largest model of our planetary system.