The spectacular collection of one of the world's best woodcarvers.

An architect's childhood fantasy treehouse made real.

A beautiful geyser under environmental threat.

The largest hot spring in the United States is, as the name suggests, a stunning show of natural color.

One man's ambition created this psychedelic log home.

The last physical evidence of the Lewis and Clark trail is one of their autographs etched into this giant rock.

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

The home made famous by the 1983 holiday classic is now a perfectly preserved shrine to the movie.

This lovely university observatory continues to sit abandoned since its potential savior was sent to jail for fraud.

The heroic sled dog of the 1925 serum run is preserved in taxidermy.

The angel of death appears to weep black tears at this grave marker.

The only presidential monument to display a late POTUS's actual casket.

An earthwork sculpture built by Robert Smithson in the Great Salt Lake only reemerges during drought.

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

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

Some of the tallest ancient American ruins continue to inspire awe and curiosity.