A Black Forest cuckoo clock theme park features one timepiece big enough to walk inside.

The birthplace of Appalachia's only first lady, who some have dubbed the United States' "first female president."

This tower was once used to create ammunition for early settlers.

An ancient cave with connections to the American Revolution.

Most historians agree that the so-called "Gentleman Pirate" wasn't much of either of those things.

The enormous 250-room Vanderbilt mansion conceals hidden doors and secret passageways.

Marker for a long-gone electric trolley line that spurred the economic development of West Asheville.

An antique Beechcraft airplane serves as a giant windsock for people driving through the blustery open country of eastern Wyoming.

This stunning home looks like it belongs in medieval Europe, not North Carolina.

A statue honoring 44 continuous years of greeting passing ships.

A monument to one of the few Olympic flames ever to be lit outside of the host city.

The first public building in Savannah to offer air conditioning was a luxurious cinema that still operates today.

An eerie smiling woman looms above the granite tombstones.

A Nessie-like monster supposedly lurks in this lake.

Rural churches in the middle of nowhere with religious frescoes by famous artist.

Hidden behind Lincoln's head is a chamber containing enamel plates documenting American history, sealed in a teakwood box in a titanium vault.

Just a man taking his prehistoric pet for a stroll.

This small museum is home to some of the oldest and best-preserved dinosaur specimens found in Montana.

The Lincoln Memorial has inspired many, even though a word on the inscription appears to be spelled incorrectly.

San Francisco's first World's Fair, dedicated to the wonders of California.

A masterpiece in Golden Gate Park by virtue of the artist’s debt.

The restaurant keeps a hidden séance room on the second floor and reserves a table for the spirit of the former owner each night.

Chicago's Navy Pier on Lake Michigan was a training hub for aircraft carrier pilots during WWII.

This unique museum cafeteria showcases the history and regional diversity of African American cuisine.