Half of a waterfall goes into the river while the other half seems to disappear.

Ancient human, animal, and geometric figures drawn in the earth.

A one-of-a-kind collection of a unique medium.

One of the largest collections of wildlife art in the United States, built into the side of a cliff in rural Wyoming.

Less a museum than a bizarre fantasy world created by artists and engineers.

100 massive sculptures in the Hudson River Valley.

An earthwork sculpture built by Robert Smithson in the Great Salt Lake only reemerges during drought.

The famed architect designed this Minnesota gas station of the future with a lookout tower.