Inside the center are Italian works of art and a replica model of St. Peter's Basilica.

The final home of the most famous horse of the American Civil War.

Burial mounds of prehistoric Native Americans who lived along the DuPage River.

Chilly air billows out from the entrance of an abandoned mine on a steep hillside, providing a refuge for Ice Age fauna and flora.

Though Johnson is not actually buried here, an Atlanta-based band sponsored a headstone for him.

An unassuming store hides relics of its former life as the jazz club that hosted some of the best black performers of the 1920s and '30s.

An abandoned factory along the Mississippi coated by a giant mural.

This historic Jewish cemetery sits right in the heart of a Detroit car factory.

A wacky two-story folk-art assemblage of carved and found objects, with lights, motion, and sound now in need of financial support.

Tucked away on a hilltop in the backwoods of Mississippi lies the remains of a blues legend.

Moving, mind-blowing metal sculpture work of an outsider artist.

The 80-foot tire that looms over Michigan's I-94 was once a Ferris wheel in the New York World Fair.

Detroit housing collective working to create an "environment for revolutionary change."