A former nuclear facility during the Cold War turned nature preserve.

This unique piece of land is home to a patented artificial lake and the remains of an old Girl Scout camp.

The remains of a massive blast furnace in what was once one of the country's largest iron-producing regions.

This underground holding cell was forgotten for over a century and rediscovered in the 1960s.

One of the few beardless depictions of Lincoln, George Grey Barnard's 1917 was denounced by many—including Lincoln's own son.

A former Canadian automobile ferry mysteriously appeared in the Black River 20 years ago, and now it quietly rusts away.

A moving tribute to a leader of the American abolitionist movement.

The final resting place of one of the most iconic musicians of the '80s.

Built around 1845, this house was occupied for 100 years, serving as a home to a prosecuting attorney, a Union Civil War general, and a wealthy socialite.

Smoky, also known as "Yorkie Doodle Dandy," was a four-pound hero of World War II.

The mounds at this site were reconstructed with the help of archaeologists and historians.

This campus museum commemorates a national tragedy.

In the middle of an abandoned stretch of old Route 50 lies a tombstone that weighs three tons.

After covering almost 1.5 billion acres, the survey's still not finished.

Historical structures and natural wonders await visitors to this preserve.

The nearly 200-year-old building displays a perplexing grammatical error.

A monument to the “unrecognized dead” of the tragic 1876 train crash.

In the Mound Hill Cemetery resides the final resting place of the world's tallest couple.

This stuffed pigeon of war had the very serious name "John Silver" until he lost a leg in battle.

In northern Ohio, the glorious past of America's trains is on full display.

Constructed in 1882, this jail once housed local inmates and the sheriff's family all under one roof.

The world's tallest doric column is this Ohio monument to a naval victory in the War of 1812.

The crash of this great airship signaled the beginning of the end for dirigibles.

A bronze monument to Cleveland's favorite, fastest son.