They call this long foot bridge a swinging bridge, but really it's the bouncing you have to watch out for.

This lovely burial mound is actually a replica that was installed after archeologists excavated the original.

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

An unfinished rail tunnel that has since been used to house cheese and bats.

A historic blockhouse and trading post give a glimpse into the early colonial history of South Carolina.

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

The lynching and burial site of America's first train robbers.

The longest navigable underground river in the United States is home to countless blind and albino animals.

This memorial to the Mercury Seven astronaut stands at the site of his former elementary school.