The largest university building in the West is a gothic masterpiece containing dozens of theme rooms based on different countries.

This charming colonial alleyway is one of the oldest continuously used residential streets in the U.S.

The United States’s oldest funicular railway glides up and down a steep Pittsburgh street.

A museum dedicated to exhibiting remarkable outsider art.

Fittingly, America's museum of architecture is itself a magnificently designed old building.

Home to items never before seen by the public.

This isn't your average roadway—it's actually a National Park and a transportation pioneer.

This shifting North Carolina sand dune is an odd little desert surrounded by oceanic forest life.

This high point in the Great Smoky Mountains is said to be home to the chief of all bears.

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

An office built to look like a giant basket.

A favorite of Amelia Earhart, ranking among those rare bridges that can be crossed without changing sides of the river.

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

The inventor of a number of hybrid corn species is immortalized with a field of giant corn.

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

The largest earthwork effigy in the world.

Knoxville’s architectural icon was the symbol of the 1982 World’s Fair, even catching the googly eye of Bart Simpson.

Moonbows over Kentucky.

The world's longest known cave system.

You thought Santa Claus didn't exist, but it turns out you were wrong.

Not to be confused with the iconic New York City skyscraper, this Chicago building is a vibrant hub for artists.

This urban drawbridge gained eternal pop culture fame when the Blues Brothers jumped it while it was raised.

A once-booming Mississippi River town with a history of racial violence is now eerie and mostly abandoned.

A Bibliophile's Dream.