Ninety feet off the valley floor is an ancient dwelling put under protection of the U.S. government by Teddy Roosevelt.

This 1,300 year old monastery built atop a single rock was once only accessible depending on the whims of the tide.

Continuing the tradition of the dime museum in style.

A semi-scholarly approach to sex.

The ancient dwellings of the Puebloans, located in the cliffs of majestic mesas.

Explore the largest pure gypsum deposit in the world, and go dune sledding while you're at it.

Elevated freight railway turned wildly successful urban park.

The only structure left with direct ties to the Salem witchcraft trials of 1692.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

Amid the bustle and noise of the Financial District hides a secluded garden oasis above the city streets.

An emerald-green grotto just a short trip from Austin.

Controversially claiming the title of world's biggest bass drum, UT's Big Bertha was once made radioactive by the Manhattan Project.

This simple frog painting created by musician Daniel Johnston embodies the spirit of Austin.

Austin’s local mountain isn’t really a mountain at all.

An abandoned quicksilver mining town surrounded by the Big Bend parks.

Ghost town with a beer-drinking goat for mayor.

This high point in the Great Smoky Mountains is said to be home to the chief of all bears.

This giant iron playfully pays tribute to an early 20th-century architectural trend.

Who needs fancy modern water slides when this giant North Carolina rock works just as well?

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

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

An annual celebration of the region's successful elk reintroduction program.

Hidden amid a collection of trails is the site of a tragic crash.

Now abandoned, the first public health hospital in the U.S. saw more than one million immigrants from around the world.