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

This pair of eccentric Ohio castles were built by a pair of brothers who wanted to bring a bit of class to the Ohio wilderness.

A miniature world of concrete and stone in Springfield, Ohio.

An abandoned asylum incorporated into a college campus.

Georges Seurat’s pointillist masterpiece has been recreated in Ohio in topiary form.

An abandoned relic of the city's failed experiment with below ground transit.

Where beautiful signs live on forever.

The largest earthwork effigy in the world.

The spectacular collection of one of the world's best woodcarvers.

Sail through this subterranean show cave that is home to a legend that would go on to name nearly everything around it.

Penn State's giant bug collection.

Town full of spiritualists, some of whom are mediums, is still in full swing after 130 years.

This two-room factory has been cranking out the musical signifier of zaniness for a century.

With well over 130 falls and cascades to brag about, Hamilton, Ontario has earned its stripes as the waterfall capital of the world.

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

This lovely public park has an intriguing past and unique wooden bridges made of concrete.

The 80-foot tire that looms over Michigan's I-94 was once a Ferris wheel in the New York World Fair.

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

A gregarious Ohio resident has been building his whimsical temple to peace for decades.

An ever-evolving wall of graffiti art off East Liberty Street.

The city is full of whimsical portals to another world.

Collapsing castle on the Hudson river was once the storage site of military surplus business.

A terrific purveyor of natural history objects and curios.

Why have you never heard of the second most popular tourist site in New York?