Field Museum of Natural History

With more than 20 million artifacts, the Field Museum of Natural History is an engaging museum filled with both interactive and imaginative displays. The big attraction is the Tyrannosaurus rex named "Sue," a 13 foot (4 meter) tall, 41 ft (13 m) long beast who menaces the grand space with ferocious aplomb. The most complete T-Rex ever discovered, it takes its name from Sue Hendrickson, the fossil-hunter who found the 90 percent complete skeleton in South Dakota in 1990.

Dinosaurs loom large in the Field Museum. At the Evolving Planet exhibit, you can also watch staff paleontologists clean up fossils, learn about the evolution of the massive reptiles, and even learn about Homo sapien's evolutionary ties to the extinct beasts. Away from the prehistoric giants, the “Inside Ancient Egypt” exhibit recreates an Egyptian burial chamber on three levels. The mastaba (tomb) contains 23 actual mummies. The bottom level, with its twisting caverns, is especially worthwhile. Those reeds growing in the stream are real.

Other displays worth your time include “Underground Adventure,” a vast exhibit exploring the habitats of animals and insects that live underground, and the “Pawnee Earth Lodge,” which allows visitors to explore a complete dwelling of the Great Plains tribe.