(Courtesy Field Museum)
This museum focuses on science, environment and culture, and is famously home to Sue, the restored and mounted skeleton of the largest and most complete T. rex ever found. Ongoing exhibit "Robert R. McCormick Halls of the Ancient Americas" takes visitors back 13,000 years and the interactive Crown Family Playlab is geared to kids ages 2 to 6. Daily 9 am-5 pm (last admission 4 pm). Basic admission $24; seniors and students $21; children ages 3-11 $17; children 3 and under free.