The dinosaurs were created by a man named Claude Bell. He started creating Dinny in the mid 1960's at a cost of $250,000. It took 11 years to finish. Dinny has a gift shop in his belly.
Another Pee-Wee comparison.
Mr. Rex was created in the early 1980's.
Pee-Wee and Simone go up to Rex's mouth to watch the sunset. They've since built this fence around the T-Rex which looks completely stupid.
A set was used for the interior shots of the mouth.