This 5-by-6-foot wooden hut is the smallest historic post office in the U.S.

Mysterious ancient boulder carved with petroglyphs in the mountains of Western North Carolina.

Abandoned for 60 years, this submerged bridge was completely forgotten until the lake was drained.

A historic dam made famous for its turbines and feature in a Hollywood classic.

The remains of the iconic train crash from the movie 'The Fugitive' can still be found rusting along the Great Smoky Railroad.

This granite rock face is named for the magnificent reflection that occurs when the sun hits it just right.