Aqueducts have dramatically changed this old lake, now home to tufa towers and its very own species of tiny brine shrimp.

Enormous lake at the bottom of a unique cave system.

This structure among the trees was the result of divine inspiration.

Towering basalt columns, a creation of fire and ice.

High on a hill overlooking Los Angeles lives a world famous, high power conical Tesla Coil.

Under the right circumstances, this waterfall in Yosemite briefly turns a luminescent fiery orange.

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

Rippling sand dunes frozen in the Arizona rock.

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