A mass grave for victims of an airline disaster that led to much-needed safety improvements for commercial flights.

This stone complex marks the urban center of a lost civilization.

This outsider art paradise is filled with dinosaur sculptures crafted from recycled machinery.

This ancient cave is home to a museum, bar, and is filled with fluorescent minerals.

This lava formation earned its whimsical name from the log-like formation of it stones.

Erosion and various mineral deposits give this striking canyon its distinct color and soft appearance.

This set of three large, volcanic hot springs is a favorite haunt for intrepid divers.

A museum in rural Utah documents the history of the Japanese Americans who were forcibly relocated there.

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

An Ancestral Puebloan ruin that appears to burst into flames in the sunlight.

One of the world’s largest collections of petroglyphs records 2,000 years of human activity.

This quiet park's strange sedimentary spires were named after Kodak's color film.

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

Hundreds of drawings left by the land's previous inhabitants remain mysterious.

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.

Giant pinnacles in the sun-scorched lands of Southern Utah have been nicknamed "white ghosts."

This geothermal hot spring hides beneath a slowly growing mineral dome.

Here, at the “world’s longest art gallery,” you’ll find forty miles of ancient petroglyphs and pictographs.

Some 10,000 works of ancient rock art cover these volcanic basalt outcrops near the Gila River.

A tribute to the statues of Easter Island along Route 66.

This memorial includes fragments from one of the greatest tragedies in United States history.

At an isolated roadside rest area stands a monument marking where famous Western star Tom Mix died in 1940.

A stone pillar commemorates the surrender of the extraordinary Apache leader.