The deepest lake in the United States, and once the site of epic destruction that lives on in legends.

On the Oregon coast is a natural hole that seems to be draining the sea.

A eclectic collection of military memorabilia.

America's largest man-made forest was planted in an effort to bring back the past.

Site of the 1879 Cheyenne Outbreak and the site where famed Sioux chief Crazy Horse met his fate.

A fascinating collection of art made from petrified wood and fossils by two octogenarian twin brothers.

An ornate Art Deco tile mosaic representing Nebraskan life, both modern and prehistoric.

A brick-paved former section of the historic coast-to-coast highway.

An idle pastime becomes a record holder in Boys Town, Nebraska.

This erect, phallic geological spire wasn't always named so domestically.

An experimental, automotive replica of Stonehenge.

The last SR-71 ever constructed.

The largest wildlife crossing in Utah allows local fauna to safely traverse the six-lane Interstate 80 at Parleys Canyon.

A cemetery full of touching tombstones from a community of railroad workers, uranium miners, and Cold War missile launchers.

The notorious Wild West outlaw was raised in this unassuming abode.

Step into the cool deep past and unknown future of who begat who.

Jurassic Park—A Still Life.

The fifth-longest natural arch in the world, and the longest outside China.

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

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

The marker offers a rare chance to be in four U.S. states at once, though there's some controversy over its geographic accuracy.

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 homage to the King at the hotel where he revived his career.

The world's largest dead polar bear, immortalized by taxidermy and Hunter S. Thompson.