The largest ancient burial mound in Ohio.

The largest earthwork effigy in the world.

These sub-farmland caves are home to a majestic stalactite known as the "Crystal King."

"Where the ducks walk on fish."

Take a drunken tour inside the world's largest known geode.

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

This massive airship factory is so large that it has its own indoor weather.

Ghost stories surrounded this “castle,” the only structure from a huge mansion that was never built.

This lovely university observatory continues to sit abandoned since its potential savior was sent to jail for fraud.

The heroic sled dog of the 1925 serum run is preserved in taxidermy.

This steamer is known as "The ship that built Cleveland."

Cleveland's giant "free" stamp is a nod to the Civil War, but was misinterpreted for years.

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

Marvel at this turn-of-the-century masterpiece that has been turned into a rather stately supermarket.

Funded by John D. Rockefeller, this is one of the earliest, and most beautiful, shopping arcades in America.

The only depiction of Abraham Lincoln holding a weapon, and the names of all 9,000 Cuyahoga veterans of the Civil War.

An old church full of restored Catholic statues is a makeup artist's labor of love.

A history of tragedy and a pile of eerie stories have contributed to this house's consistent ranking as one of the most haunted places in Ohio.

This spectacular public market has got meat, fish, vegetables, baked goods, and enough kielbasa for a lifetime.

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.