This natural spring not only claims to heal the wounded but it has also been willed to God.

Settled in 1696, abandoned after the Revolutionary War.

Oldest unrestored plantation house in America that is open to the public.

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

Outsider art meets paleontology at this roadside reptile repository.

A sacred site for Native Americans surveyed by George Washington and owned by both King George III and Thomas Jefferson.

This stunning blue and gold room changed cities twice before becoming part of the Smithsonian.

The Byzantine, pre-Columbian, and medieval art at this stately mansion are some of the most under-appreciated collections in D.C.

A hidden gem on the lawn of the U.S. Capitol Building designed by landscape architect Frederick Law Olmsted.

A tiny piece of the Moon is embedded in this stained glass masterpiece.

One of the dwarven trees dates back to 1625 and survived the Hiroshima bombing.

Long-abandoned trolley tunnels just a mile away from the White House are turning into an art space.

Home to items never before seen by the public.

The site of the climactic scene from the classic horror film is now a historic landmark.

The United States Capitol's former columns still stand.

Marvel at this turn-of-the-century masterpiece that has been turned into a rather stately supermarket.

An art deco ice cream shop covered in vintage train station tiles.

An unusual, super-sized grocery adventure awaits in an Ohio suburb.

This spectacular public market has got meat, fish, vegetables, baked goods, and enough kielbasa for a lifetime.

The inventor of a number of hybrid corn species is immortalized with a field of giant corn.

Rare recess caves fill this unbelievably beautiful Ohio park.

The largest earthwork effigy in the world.

Dark, eerie exhibits make for a surreal exploration of the subconscious.

This archaeological site boasts temple ruins that date back 5,000 years to the Dilmun culture, and may have been described in the tale of Gilgamesh's search for immortality.