At this farm in upstate New York, the former president plotted his reelection campaign.

The schoolhouse where Jesse Merwin, the inspiration for the "The Legend of Sleepy Hollow" character, once taught.

An abandoned munitions factory with a shot tower continues to wage war on the surrounding environment.

A castle built by an eccentric medieval enthusiast in suburban Ohio.

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

Inside houses a vast collection of military aircraft and missiles spanning the ages.

The largest ancient burial mound in Ohio.

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

The largest earthwork effigy in the world.

This humble star-gazing center touts itself as the "Birthplace of American Astronomy."

What is it about mushrooms that makes people wish they lived inside of them?

This high-desert oasis spotlights some of Colorado’s most sacred native plants.

One of the smallest towns in the United States.

This modern antique shop is a museum for 1980's Saturday morning cartoon culture.

This gallery is home to everything from antiques, to ancient tribal masks.

Between a bike path and the South Platte River sits a piece of modern space history.

A pair of gargoyles peer into unsuspecting passengers at Denver’s conspiracy-packed airport.

The world's largest flat-topped mountain.

This bee-themed family business does more with honey than anyone would think was possible.

Sip heritage cider with a surprising backstory at this family-owned cidery.

A quiet rock and botanical garden is the beautiful centerpiece of Fort Lewis College.

Of all the unique artifacts inside this library, a mummified hand stands out among the others.

Hilltop modernist/folk art shrine and gardens dedicated to a Native American saint.

This outdoor exhibit features a historic wooden dam once used to help boats navigate the Ohio River.