This historic mansion was built as a symbol of love between a husband and wife.

Bubbling up from deep underground is the warm crystal clear water that fills the Warm Springs Pools, America's oldest spa.

Nine of the very few concrete ships ever made in the U.S. are beautifully decaying off a Virginia pier.

An organ located deep within a cave, whose "pipes" are the geological features of the cave itself.

This once-palatial plantation may have been the site where a draft of the Declaration of Independence was written.

Heron, whitewater rapids, and urban industrialism all add to the beauty of this concrete nature walk.

This 29-ton granite ball spins around at the slightest touch thanks to a scientific phenomenon.

A railroad tunnel that, upon its completion, was considered one of the engineering marvels of the modern world.

The flower-shaped temple in Virginia aims to transcend the boundaries of the world’s religions.

A 300-yard long natural tunnel runs through a ridge deep in the Appalachian Mountains.

See wolves, coyotes, and arctic foxes in a natural environment smack in the middle of New York State.

This maze-like slot canyon is a unique gem within an already fascinating geological area.