The largest earthwork effigy in the world.

The site of the climactic scene from the classic horror film is now a historic landmark.

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

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

Found art has transformed this Pittsburgh neighborhood into a psychedelic dream.

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

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

A circle of giant painted vases in the former pottery capital of the United States.

This whimsical campus lawn is dotted with large sculpted numbers and hidden mathematical formulas.

Artifacts fill the old headquarters of the hugely influential political movement to ban alcohol in the United States.

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.

An unassuming 13-acre park is home to over 12,000 roses.

A bronze of the man in all his sinewy glory celebrates his longtime connection to the Ohio city.

The entrance to this sinisterly named tunnel hides behind a Tim Hortons.

This presidential tomb was not dedicated until years after Harding's death due to personal controversy.

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

Featuring one of the most complete and original collections of Presidential memorabilia, this is the site of the last front porch presidential campaigns.

These rows of World War II-era bunkers were the scene of some of the infamous Mothman sightings.

All that remains of a gigantic earth-moving machine.

D.C.'s first central library was born out of a chance encounter with the philanthropist whose name it bears.

The actual model from the original "Star Trek" series is now on display at the National Air and Space Museum.

The beloved statue at the National Academy of Sciences is oh so inviting to sit on.

This recycled wax museum may be the only one that features John Travolta in a Bible scene.

Superfans of The Shawshank Redemption can take a driving tour of most of the films real locations.