People of the Plum Bayou culture built these enormous mounds over 1,000 years ago.

This restaurant serves wood-fired fare served in a natural cave with a live spring.

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

A whimsical folk art garden full of punny pieces and a diorama containing 3,500 toys.

The haunting "Hell House Altar" is one of the few remnants of an abandoned college that has been a magnet for local legends.

A museum dedicated to the lovable crime couple Bonnie & Clyde, just a few miles away from the site of their early demise.

A small World War II museum housed in what was once the largest navigation school in the United States.

This ancient settlement contains some of the largest earthen mounds in North America.

The metal spire on the roof of this tower was intended as an airship docking station, but it was never actually used.

These hooded graves are the only of their kind in the United States.

Outside a small brewery, a Gothic fountain that once provided water to thirsty horses.

A monument to an Irish secret society thought to be responsible for a string of violent attacks in Pennsylvania coal mines.

An underground blaze turned this village into a ghost town.

A reservoir of vintage pinball machines and arcade games for the nostalgic and thrill seeking.

The site of one of history's most indelible and horrific tragedies.

The first marker along the famous boundary.

The meeting of the northwestern corner of Delaware, the northeastern corner of Maryland, and the southern edge of Pennsylvania.

A sacred collection of indigenous rock art.

Where hills of dirt conceal the burial ground of one of the most powerful ancient Native American societies.

One believer transformed a local curiosity into proof of Vikings on the Great Plains.

Kentucky's anomalous peninsula projecting into the Mississippi River, site of legendary earthquakes and local feuds.

This railroad overpass is said to be home to a murderous goat-man whose very legend has led to very real deaths.

Unique tower has outlasted a takeover of the company.

A grotesque Fiji merman dwells within this traditional Dutch-style building.