A full-scale replica of 'Sue,' the largest and most complete Tyrannosaurus rex skeleton ever discovered, stands in DinoLand U.S.A. near the DINOSAUR attraction. Cast from the actual fossil housed at Chicago's Field Museum, the 13-foot-tall, 42-foot-long skeleton is an impressive and educational photo opportunity. Free to view — just walk up anytime. Information plaques provide fascinating details about the T. rex discovery and what scientists have learned about these ancient predators.