Red sandstone structures dominate this landscape, which has been inhabited for some 5,000 years.

A dangerous narrow-gauge railroad once traced a route through this striking canyon.

Strange red rock formations that have been attributed to a higher power for hundreds of years.

Let Ouray’s tallest waterfall sweep your breath away on a dealer’s choice of scenic hikes.

A glimpse of a waterfall is reached by a steel catwalk along a slot canyon located in an Ouray city park.

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

The marker offers a rare chance to be in four U.S. states at once, though there's some controversy over its geographic accuracy.

Colorful sand dunes create a unique attraction in this part of Utah's red-rock country.

These Great Lakes sea caves accessible by boat in the summer turn into temples of ice reachable by foot in the winter.

This 19th-century ghost town offers a stunning view of Lake Michigan and a journey through the region's industrial past.

This freshwater spring fills with 10,000 gallons of water per minute.

"The Most Boring Road in the State."

This stretch of beach along California's central coast is a busy highway for the largest seal in the northern hemisphere.

One of the most scenic stretches of road in America winds between some of the country's oldest trees.

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

This historic high school was saved from demolition to become an island home for Marshall’s creative community.

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

One of the world’s largest and deepest freshwater springs, where mastodons once roamed.

Tucked away in the forests of North Florida resides a 19th-century lighthouse.

The walls of America's oldest masonry fort famously "swallowed" cannonballs.

The culprit who accidentally lit this 3,500-year-old tree on fire stated "I can't believe I burned down a tree older than Jesus."

This natural spring is the winter home to the largest gathering of manatees in the world.

Meet manatees face-to-face at this zoo for native species.

Possibly the most beautiful carillon in the world, set atop Iron Mountain in Florida.