The tallest waterfall in West Virginia.

This gravelly, dangerous highway is the only road in the United States that leads to the Arctic Ocean.

This park straddling the United States-Canadian border has been a symbol of peace since 1932.

A sacred Ojibwe site covered in pictographs next to Lake Superior.

Once a lonely sentinel on the edge of the Great Plains, this rebuilt trading fort offers a glimpse of life on the Santa Fe Trail.

A former barn converted into a massive train diorama.

A flying saucer has landed for good in the middle of a tiny Canadian town.

America's silhouette includes 100 square miles of wilderness jutting into Canada thanks to an old mapmaking error.

The farm where one of America's greatest leaders was raised is now a well-appointed landmark.

The ravine where Jesse James supposedly performed an impossible jump to evade capture.

Nestled near the mountains of western Canada resides this behemoth earth mover.

Built after the 1991 discovery of one of the world's most complete T.rex skeletons in the nearby hills.

Museum with an extensive collection of Cray supercomputers and related artifacts.