An amazing collection of scale model ships.

Buy a token from the liquor store and you can make this beast spew flames on command.

Once known as the Illinois Asylum for the Incurable Insane.

Theater has had many different incarnations but has survived the ravages of time.

Man-made geyser that rises to the exact height of the Gateway Arch.

This life-size bronze statue remembers the tallest recorded human in his Illinois hometown.

This mesmerizing kinetic sculpture blossoms endlessly in the breeze.

A historic arena where the Beatles played their first concert in the U.S.

The preamble to the U.S. Constitution written entirely from vanity license plates hangs in the Smithsonian museum.

After his presidency, George Washington planned to live only a few blocks from the Capitol building.

Depending on who you ask, this controversial treehouse is either a charmingly creative child's playhouse or an illegal encroachment on public land.

One critic described it as "middle Mussolini, early Ramses, and late Neiman-Marcus." Another called it an architectural "natural disaster."