This crumbling Death Valley mining complex was known for its use of giant, 20-mule team wagons.

Aqueducts have dramatically changed this old lake, now home to tufa towers and its very own species of tiny brine shrimp.

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

A popular tourist cave with a dark past.

Beneath a Virginia City bar is the entrance to an abandoned gold mine.

This municipal playground was co-created by the father of one of the most playful characters ever.

This naturally heated mountainous creek has created a group of neon blue pools of potentially deadly boiling water.

A remote crossroads honoring a fallen talent.

Towering basalt columns, a creation of fire and ice.

A glimpse into the lives of the the Miwok and Paiute people in Yosemite National Park.

The interior of the Overlook Hotel in "The Shining" was based on this Yosemite original.

A ghost town originally established and governed solely by Black Americans seeking a place of their own, free from discrimination.

Quite simply the largest tree in the world (by volume).

An underground mansion with fruit-bearing trees and grapes growing beneath the surface of central California.

The Old Courthouse takes visitors on a captivating trip through St. Louis' timeline.

Less a museum than a bizarre fantasy world created by artists and engineers.

The hotel where Martin Luther King Jr. was shot is now a museum dedicated to his work.

This Memphis recording studio launched the careers of Jerry Lee Lewis, Johnny Cash, and Elvis Presley.

Elvis's own personal tropical hideaway.

Walk the whole Mississippi River!

Home to drunken tower-climbing goats... seriously.

Every day a troupe of pampered water fowl walk the red carpet to their favorite fountain.