Georgia's first brewery is also one of its oldest surviving buildings.

Constant erosion has created a surreal landscape of bleached and preserved fallen trees.

The lowest point in the state of Illinois, at the confluence of the Mississippi and Ohio rivers.

An abandoned network of military bunkers and tunnels open for anyone willing to descend into the darkness.

First known as the "Sample House," this construction mash-up was meant to be a living catalogue of building styles.

Less a museum than a bizarre fantasy world created by artists and engineers.

What was meant to be a temporary exhibit is now a permanent fixture at the St. Louis Zoo filled with beautiful birds.

This titanic oil company sign is a reminder of the Americana boom of the 1970s and also its commoditization.

This monolithic statue was erected in honor of Chief Black Hawk (even if it wasn't made to look like him).

A large circus museum with summer performances.

A unique botanical garden housed in three giant geodesic domes.

One of the largest aviation events in the world brings half a million aircraft enthusiasts to Wisconsin each year.

One of the last surviving C-97s sits in a field in front of a Wisconsin inn.

Controversial tribute to the heavyweight champion boxer who grew up in Detroit.

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

A Beaux-Arts triumph rises from decades of decay to become the heart of a new innovation district.

Take a drunken tour inside the world's largest known geode.

One of few surviving standpipe water towers in the U.S.

A large collection of motorbikes with some impressive gems.

St. Augustine's record-setting narrow street was designed to protect against pirates.

An 18th-century Spanish watchtower made entirely of seashell and concrete.

The ruins of this antebellum sugar plantation are the end result of a Seminole attack during the Florida Wars of 1836.

In this case, 'zero' marks the spot where the iconic Old Spanish Trail ends.

A tribute to Ponce de Leon's supposed quest for eternal youth.