This restored farmhouse is a time capsule of a 19th-century Colorado homestead.

Home to items never before seen by the public.

With over 100 jam-packed rooms to explore plus elaborate tea services and events, the Mansion on O Street is a hidden treasure.

A place where the laws of nature seem to have gone completely berserk... but of course haven't.

A well-preserved Ancestral Puebloan ruin tucked beneath a desert cliff.

A phenomenal assembly of pueblos in New Mexico is the most complete example of ancient ruins north of the border.

A waterfall 600 ft. inside a mountain, once the bane of gold miners, is now a spectacle of nature.

A small metropolis of Pueblo cave dwellings have been carved right into the hillside of this national monument.

The world's largest mountain carving could fit all of Mount Rushmore inside it many times over.

This prehistoric sinkhole lured exclusively male mammoths to their death, much to the delight of science.

One of the American Southwest's most extensive collections of Navajo rock art.

A preserve with 75,000 ancient drawings remains the realm of public – not just scientific – exploration.

A multi-storied adobe complex has been inhabited for more than a thousand years.

This raised bulls-eye visible from space was the subject of an intense geologic controversy.

Few things look more out of place than the electric blue ponds in the reddish-brown desert of Utah.

A breathtaking array of ancient Pueblo structures and artifacts counterintuitively preserved by neglect.

A house carved into a rock in the 1940s.

An antique narrow gauge railway line still running through the Colorado and New Mexico mountains.

The childhood home of Henry Jones Jr. is now an adventure-themed bed and breakfast.

Colorado's only true geyser is hidden within the San Juan National Forest.

Once a lonely sentinel on the edge of the Great Plains, this rebuilt trading fort offers a glimpse of life on the Santa Fe Trail.

A recreation of an Old West apothecary full of curios.

When ecosystems collide in the arid Southwest.

A collection of fading fantasy tchotchkes lines this dirt road in the Colorado wilderness.