An underground mansion with fruit-bearing trees and grapes growing beneath the surface of central California.

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

Once thought to be the oldest living tree in the world, Methuselah was germinated before the Egyptian pyramids were built.

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