The largest historic preservation organization in the United States.

A 2,000-year-old Adena burial mound located along a busy street in Columbus, Ohio.

Abandoned former poorhouse, bible college, and haunted house in an Ohio hamlet.

Constructed from the ruins of a former glass factory, this park incorporates the old with the new.

The childhood home of the Wright Brothers in Dayton.

See the nearly two-century-old ruins of pre-railroad America at the former site of a lock on the Ohio and Erie Canal.

A unique collection of military history dating back to the American Revolution.

The only statue of its kind to commemorate Washington's beginnings as an officer of the British Colonial Militia.

A living maritime paradox still floats in the same lake where it was built and resurrected... or was it?

Where one of the worst train disasters in the country took place, leading to upgrades in rail safety.

More than 350 million years ago, western New York was covered in a vast sea. Today, you can dig up the remains of the plants and animals that lived there.

A natural gas leak provides a flickering flame beneath a waterfall.

This former hub for crafty philosophers was founded by a writer who died aboard the infamous RMS Lusitania.

This exhibit pays tribute to the “humble tinkerer” who invented the implantable pacemaker.

Eclectic architecture in the woods of New York.

A historic home with ties to the abolition and suffrage movements.

A near tragic event on this bridge helped inspire the classic film "It's a Wonderful Life."

This statue commemorates the meeting of the most influential minds of the women’s rights movement.

What remains of the simple red brick chapel where the women's rights movement began.

Opened in 1947, this is the oldest continuously-operating drive-in theater in New York.

The final resting place of Harriet Tubman and other famous historical figures.

Where Eunice Williams was murdered by natives, and where locals say her ghost still haunts.

This tall Massachusetts folly got its name thanks to all of the purple prose its vistas inspired.

The former site of an all-but-forgotten colonial landmark is now remembered by an often overlooked bas relief.