The rusted remains of a victim of Hurricane Ike.

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

Most-visited and most-photographed slot canyon in the American Southwest.

Collection of vintage trailers double as hotel rooms.

A wild west cemetery in Tombstone, Arizona, provides a window into the Old West.

A reproduction of earth's many biomes.

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

A museum and tribute to a brave profession.

A geological mystery on Camelback Mountain.

An urban laboratory.

A sharp bend in a dramatic river canyon cut through red rocks.

The rocks in this arid basin leave trails of movement behind them.

An abandoned Jazz Age dream home and con man's hideout in Death Valley.

Nature's biggest mammal swims in landlocked Oklahoma.