This stone, said to have once been a young woman, is sacred to the Dakota and Lakota nations.

Dedicated to the history of the 1,000 nuclear missiles that once covered the Great Plains.

An autonomous oak in Alabama.

At this Minnesota state park you can easily wade across the source of the mighty Mississippi.

Hidden behind Lincoln's head is a 70-foot-long chamber containing enamel plates documenting American history, sealed in a teakwood box in a titanium vault.

Go inside the house that inspired L. M. Montgomery to create one of literature's most beloved heroines.

These crudely shaped folk giants may be the the second most photographed statues in the U.S.

This sprawling collection hides many charms.

The first declared National Monument in the United States.

A true roadside icon standing on the same plains that the herds once roamed.