Lovingly nick-named the "Brick Dick" this municipal tower was winner of the World's Most Phallic Building Contest.

An eight-sided home built during a brief octagon craze in the 1850s.

Under a playground is a little-known sealed train tunnel that likely contains the bodies of workers trapped by cave-ins.

A small Richmond island dotted with the remnants of hundreds of years of history.

This once-palatial plantation may have been the site where a draft of the Declaration of Independence was written.

Heron, whitewater rapids, and urban industrialism all add to the beauty of this concrete nature walk.

A 300-yard long natural tunnel runs through a ridge deep in the Appalachian Mountains.

This statue in Talcott, West Virginia, is an enduring symbol of American grit.

A 1,000-foot-long railroad tunnel under Shavers Fork connected the towns during West Virginia's logging boom until its closure in 1985.

This former fire tower found new life as a communications hub complete with a scenic overlook.

An abandoned coal mine reached by a steep hike.

This lookout tower built in the 1930s is now an in-demand cabin with what might be the best view of the Seneca State Forest.

A well-preserved relic of the industrial age steel and iron works that dotted West Virginia.

This abandoned train tunnel has been the subject of countless ghost stories for years.

One of the few surviving examples of the first lock and dam system built on the Ohio River.

One day a year it is legal to jump off of this astoundingly tall bridge that spans an Appalachian gorge.

This abandoned dream castle and its cemetery look out over the city that once inspired their creation.

The bones of an old zoo crumbling in the shadow of a new one.

Once the extravagant escape of the Ford family, this enigmatic ruin now stands as a haunting reminder of its former glory.

Largest outdoor staircase in the United States.

House built with over 60,000 glass bottles.

If astronomy had a ghost, it would look like this observatory.

A herd of roughly 250 American bison roam these plains.

One of the first commercially successful anthracite-powered iron-making operations in North America.