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

Home to items never before seen by the public.

The United States Capitol's former columns still stand.

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

Known as "The Hill of the Little Devils."

This simple stone monument honors a 19th-century tragedy.

One of the world's most definitive collections of musical instruments, spanning all cultures and historical periods.

This 19th century Sioux City candy company is the home of the Twin Bing, a historic, chocolate-covered treat.

America's first National Historic Landmark is a 100-foot tall obelisk and gravesite dedicated to the only casualty of the Lewis & Clark Expedition.

A Winnebago Tribe collection featuring arrowheads, artwork, and a mysterious rock carving.

Enormous lake at the bottom of a unique cave system.

One man has carved a number of natural New Mexico caves into psychedelic sandstone temples.