At the time of its completion, it was the tallest dam in the world.

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

A devilishly named gorge that was a sign of salvation for many pioneers.

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

Features unique photographic collections by women of the American West and historical attractions such as a two-story outhouse.

The high point on the 16th president's eponymous roadway is marked by a massive version of his head.

Miraculous tree that seems to sprout out of solid rock.

One of the smallest towns in the United States.

An extravagant western hotel where every floor is the "ground floor."

This haunted hotel built on natural springs once served as a hospital for a quack doctor promising a cure for cancer.

This futuristically sylvan church is a glass-enclosed marvel of modern architecture.

A crumbling hospital from the 1850s on Roosevelt Island.

An adorably sweet display of sculpted Precious Moments figurines.

A mysterious light of unknown origin on the backroads of Missouri.

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