A spring-fed pool so deep it's used for scuba diving as well as swimming.

A collection of massive stacked rocks in Texas includes a snarky note on the benefits of modern technology.

Two massive and unstable sinkholes are yearning to unite, and their consummation could be catastrophic.

You can find America's highest suspension footbridge at Grandfather Mountain in North Carolina.

The highest point in Virginia can only be reached by passing through ponies and flowers.

This sacred cavern, 400 feet deep, is home to millions of bats and an ancient burial ground.

The pit stop from "The Texas Chainsaw Massacre" now serves beef and pork barbecue, not people.

In the late 1990s, a mechanic and fan bought this iconic sportscar back from the dead.

This natural spring not only claims to heal the wounded but it has also been willed to God.

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

Enormous lake at the bottom of a unique cave system.

This road in the Great Smoky Mountains was supposed to assuage a displaced community, but ended up a $52 million dead end.