Head west on Interstate 90 and not far from downtown Spokane, near Exit 257, you'll see what appears to be the dreamscape of a 10-year-old brain. A 16-foot Tyrannosaurus Rex terrorizing a treehouse.

It's hiding in plain sight right next to the lively I-90 between the Cheney and Medical Lake exits. It's a familiar, yet mysterious place. There are cows on boats, giant eagle statues, and a friendly ...