Abstract marble carving for an 8.5-pound rock.

The permanent home of a 1960s traveling museum of tiny historical dioramas.

This little-known memorial honors those who have donated their bodies to medical training.

Cadillac where country's first big star was found dead.

Bananas are often left for the first monkey America ever recovered alive after being launched into space.

400 million-year old limestone caverns nestled in the Ozarks served as shelter and a hideout for cultures throughout North American history.

This angular Dwarven tunnel cuts through a mountainside in Glacier National Park.