A tiny chapel clings to a precipice above Germany’s gemstone capital.

This Italian foot path winds through the mountains via 52 individual tunnels.

This one-time health resort was used by aristocrats around the world.

An abandoned NSA listening post on Berlin's "Devil's Mountain."

A dramatic, 360-degree recreation of Pickett's Charge in the Civil War.

Don't get it twisted: This is the oldest pretzel bakery in the United States.

These tourist trap caverns are said to be the former home of a legendary Pennsylvania Hermit.

A little sculpture with a large wardrobe.

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

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

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

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

These unique markers designate the route American forces took during the Liberation of France.

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

Air Force Academy Chapel made of 100 identical tetrahedrons works to inspire those of all religions.

Electrical pylon in the shape of Disney's beloved mouse.

FDR hoped to find a cure for polio in this Georgia town's warm springs.

Auburn's iconic eagle flight goes back to a 19th century eagle that dropped dead on the field after inspiring the football team to victory.

A preserved stretch of ancient fossilized trees with an impressive gem collection to boot.

Built by prisoners of war, the largest small-scale model ever built includes eight miles of tiny streams that now sit abandoned.

A collection of outdoor art by renowned muralist Robert Dafford depicts the history of a flooded city.

This Tennessee museum is dedicated to a tragic railroad hero who inspired the famous ballad that bears his name.

Over a dozen Native American earth mounds dating back over 2,000 years dot this Tennessee archaeological park.

The last bastion of Roman presence north of the Alps looms over a German town.