A monument to the one-armed geologist who led the first documented expeditions through the Grand Canyon.

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 remnants of a creative early method of wildfire prevention.

Legends surround this jagged rock formation in the New Mexico desert.

This small interfaith chapel lies not far from the rim of the Grand Canyon.

If drivers cross the rumble strip on this stretch of Route 66 at just the right speed it plays "America the Beautiful."

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

Twice a year, visitors can tour the desolate site that birthed the Atomic Age.

An homage to everyone's favorite prehistoric cartoon family.

The eroded core of an ancient volcano is now accessible by a short hike.

A wealth of pop culture statuary and green chile dishes give this roadside restaurant clout.

A one-of-a-kind sundial at the Very Large Array honors a radio astronomy pioneer, incorporating the original piers from his breakthrough radio telescope.

Twenty-seven massive radio antennas on the high plains of New Mexico search for life on other planets.

This Arizona observatory is famous for investigations into Martian life, and as the place humans first spotted Pluto.

Ancient pueblos built into the base of a natural canyon wall.

An old saloon in the West filled with history, and according to some, a few dozen ghosts.

One of the largest private collections of cars manufactured by the short-lived Franklin Automobile Company.

The fading, forgotten remains of a once bright and booming factory.

The Magical World of George Phar Legler.