The only structure left with direct ties to the Salem witchcraft trials of 1692.

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

You can walk through the first Boeing Air Force One, which famously carried JFK's casket from Dallas back to D.C.

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.

A 70,000-square-foot institution dedicated to a very literal, creationist perspective on the Book of Genesis.

An unusual, super-sized grocery adventure awaits in an Ohio suburb.

This abstract roadside poultry was saved from demolition by outraged drivers and pilots.

Bootleggers ran booze beneath this building before (and after) Route 66 appeared beside it.

A motel dedicated to Southwestern nostalgia.

A six-ton, 12-foot-tall concrete prairie dog is touted as the largest in the world.

A massive tribute to this small county's top agricultural product.

Come for the speed, leave in love with the desert.

The first declared National Monument in the United States.

Hidden behind Lincoln's head is a 70-foot-long chamber containing enamel plates documenting American history, sealed in a teakwood box in a titanium vault.

The world's largest mountain carving could fit all of Mount Rushmore inside it many times over.

This magnificent Cincinnati graveyard is also a popular public park.

A building so large that it has its own weather.

Believed to be haunted, this old cemetery is beautifully adorned with Spanish moss hanging from the trees.

The highway's southernmost spot is a beloved local attraction.

A monument celebrating the idea of reaching inaccessible places.

One of the world’s largest and deepest freshwater springs, where mastodons once roamed.

This historic crypt was said to have been designed and built by the very person who is buried inside of it.

This fairytale-inspired cottage was created by a university literature professor.