This stately clubhouse has showcased German-American culture for over a century.

Once adorning a New York skyscraper, these reclaimed ruins now haunt an Indiana park.

A rare view of a preserved Victorian science museum.

The world's longest known cave system.

Hiding behind a grocery store is a spectacular cavern carved as part of an old limestone quarry.

This large cave is a summer home to thousands of bats and has a rich history dating back to prehistoric times.

The grave of America's 11th president is not in some grand monument but instead it's hidden away on the grounds of the Tennessee Capital.

An engraved boulder marks the spot where Patsy Cline's life ended in a plane crash.

Railroad came. People came. Railroad left. Town died.

The hide of Stonewall Jackson's equine sidekick is on display not far from where the ashes of his bones are buried.

The semi-reclaimed ruins of this canal were once part of an ambitious plan to reroute the mighty potomac.