A towering bronze statue memorializes the founding father of postwar American conservatism.

The massive, incredibly rare instrument is over 11 feet tall with a range so deep it goes lower than humans can hear.

A geological mystery on Camelback Mountain.

This striking public art installation is suspended above a public park, designed to gently move in the breeze.

The largest natural travertine bridge in the world is nestled in a small canyon in central Arizona.

Limestone caves with spectacular showcase chambers.

A spiritual vortex among the red rocks in Sedona.

Eons ago, a rushing lava river formed this pristine passage through solid rock.

A reproduction of earth's many biomes.

Dramatic river bend surrounds a natural red-rocked pedestal.

This secluded aqua waterfall in the Grand Canyon is the perfect swimming hole, and the Havasupai tribe's fiercely protected natural wonder.