A 90-foot-tall psychedelic "tree" on the side of the highway has baffled passersby for decades.

The last SR-71 ever constructed.

The location along the shores of the Great Salt Lake of what was once called, "The Coney Island of the West", now sits barren due to arson and time.

A towering tribute to decisiveness stands on the spot where Brigham Young and his followers decided that this must be the place.

Here lies Lilly E. Gray, an alleged "victim of the beast," but the reason long remained a mystery.

"May the force be with you always."

This giant temperature attraction created some giant electric bills.

Come for the speed, leave in love with the desert.

Roadside collection of 65,000 signs.

Home of mutant livestock.

The L.A. Zoo has a secret garden of rare bootleg cycads, a palm specimen dating back 280 million years.

Thousands of turbines whir at the origin of North American wind power.

Where NASA's satellites and rovers phone home.

Visitors to this library are in for a real-world education in modernist architecture.

A hidden garden of stones engraved with scriptures, a Joseph Smith Sphinx, all carved by one man.

The largest island on the great salt lake is home to curious creatures and strange stories.