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.

Experience a charming 1930's version of "infotainment."

Stained glass windows bathe this botanical garden in cosmic light.

Part bookstore, part café, and part forest.

Commercial airplanes land mere feet over the heads of sunbathing beachgoers on this tiny island.

This bare tree might not have leaves but it is constantly clothed in festive decorations left by mysterious local benefactors.

Controversial tribute to the heavyweight champion boxer who grew up in Detroit.

A sealed test tube said to hold Thomas Edison's dying breath was given to the inventor's friend and mentee, Henry Ford.

The largest earthwork effigy in the world.

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

Abandoned former poorhouse, bible college, and haunted house in an Ohio hamlet.

Frida Kahlo's childhood home, now a museum of her life and works.

66,000 pieces of art, donated by one of the world's richest men.

The only castle in North America to ever house European sovereigns.