About the Cleveland Museum of Natural History:
The centerpiece of the Cleveland Museum of Natural History, dinosaur-wise, is the Kirtland Hall of Prehistoric Life--the stars of which are "Happy," a 70-foot-long Haplocanthosaurus that's one of the oldest sauropods on exhibit anywhere in the world; a 40-foot long Allosaurus; and the world's only confirmed skull of Nanotyrannus (which may yet turn out to be a juvenile T. Rex). This hall also features a generous selection of non-dinosaur fossils, including trilobites, saber-toothed tigers, and Dunkleosteus, a fossil fish found in the environs of Cleveland.
Once you're done with the full-sized dinosaurs, be sure to visit "Fieldwork: Ancient Discoveries from Cleveland to Mongolia," which showcases the continuing investigations into ancient vertebrates by the Cleveland Museum of Natural History's paleontologists. Rather than full specimens, this exhibit shows fossil work as it's really done--in bits and pieces, on jagged slabs of rock. As a bonus, the Fieldwork exhibit also includes the skull of a brand-new ceratopsian, Albertaceratops, discovered in 2001 by museum curator Michael Ryan.