The final resting place of the world's first nuclear reactor.

The famous author's birthplace is preserved in a town that he once described as narrow-minded.

After an Illinois church was struck by lightning and burned down, Frank Lloyd Wright designed this replacement.

The sign to a demolished amusement park now stands in front of a local library.

Museum dedicated to the art of cutting and polishing stones.

The company moved out of its sprawling headquarters, leaving plenty of traces behind.

One of the finest examples of a black soil prairie that was barely saved by the Great Depression.

A source of civic pride, though the reason for its construction is unknown.

This historic hotel invented the chocolate brownie.

A hollow cement depiction of time's inexorable effect on the human body.

An antiquated German apothecary on Chicago's North Side.

A monument to the art of slicing people open.

A Bibliophile's Dream.

A lush green oasis in the middle of Chicago.

This whimsical Oz-themed park had a wonderful impact on the surrounding neighborhood.

This massive stained-glass masterpiece is thought to be the largest Tiffany dome in existence.

The oldest brick house in the state of Ohio.