The easiest way to the highest point in Wyoming is only accessible via one hefty fee.

A popular rock that acted as a waymarker for American pioneers.

This rustic old building is said to be the most photographed barn in America.

This prison-turned-museum is a remnant of the Old West's grizzly, violent past.

An architect's childhood fantasy treehouse made real.

The remote outlaw hideout of Jesse James, Butch Cassidy, and the Sundance Kid.

16,500-acre ranch filled with American heritage, geological wonders, and a giant pile of tires is the crown jewel of an intriguing tug-of-war.

The final resting place of American icon Buffalo Bill, and a museum that aids in telling his tale.

Its history includes dinosaur fossils, cattle rustlers, Georgia O'Keeffe, and a mythical giant rattlesnake named Vivaron.

Successful artist residence program has filled this ranch with dozens of sculptures over the years.

This former mining town was named the most toxic town in America.

Native Americans built this circle of stones, which was used to predict astronomical events.

A working ranch doubles as a sustainable hub for world-renowned classical music and large-scale sculptures.

One man's ambition created this psychedelic log home.

A 19th-century smallpox cemetery is being reclaimed by scrub forest and sand dunes.

The Atlantis of Cape Cod reemerges during the lowest of tides.

The Cape Cod house that whaling built.

An uber-secure, windowless tower of doom in the center of Manhattan is an NSA spyscraper.

This memorial honors thousands of enslaved Africans and their descendants who died in colonial New York.

For thousands of years, Native American hunters drove buffalo straight off this cliff in Montana's Yellowstone Country.

The highest point in Maine is a grand gift to the state citizens that also happens to be one end of the Appalachian Trail.

This historic collection of Native Alaskan artifacts was resurrected through a partnership between the WPA and tribal artisans.

A massive volcanic plug is now a protected area that hosts a number of bird species.

A 300-yard long natural tunnel runs through a ridge deep in the Appalachian Mountains.