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

The hike through a narrow river flanked by the 2,000-foot-tall walls of Zion Canyon is one of the best in the world.

It takes a nine-mile hike to reach these hot springs, but weary hikers are rewarded with stunning views and a warm soak.

The site of a defunct mill, that once supplied marble for the construction of the Lincoln Memorial.

Each year, teams of the world's best snow sculptors have 65 hours to create frozen masterpieces.

This grand stone tower was dedicated to a famed American humorist almost by coincidence.

These decaying bridges 1,000 feet high are a reminder of the skill it took to cross the Colorado Rockies by rail.

The highest paved road in North America winds its way up Mount Blue Sky in Colorado to an altitude of 14,130 feet above sea level.

Silver in the hills led to the speedy creation of this boom town and a lack of it saw the town abandoned nearly as quickly.

This spectacular track has run continuously since 1882.

Despite being one of the most photographed vistas in the Rockies these twin peaks are rightfully known as the "Deadly Bells."

Crystal clear lake with a shoreline of travertine located in a Colorado canyon.

Standing in a state of "arrested decay," this ghost town allows for a detailed peek into Gold Rush life in an unusually harsh climate.

Eons old volcanic activity created one of the most stunning rock formations in the United States.

This hidden fire lookout offers spectacular views of Sequoia National Park.

It houses the remains of a 17th-century version of the Titanic.

Just a man taking his prehistoric pet for a stroll.

This super steep hike ascends 2,000 feet in less than a mile.

This nearly abandoned town was once a thriving mining community until a series of fires.

Paranormal experiences in this hotel's room 217 led Stephen King to write "The Shining."

The world's largest key collection features keys to the White House, Frankenstein's castle, and Hitler's bunker.