Took my 2.5 year old granddaughter to the museum on a Friday morning. Arrived promptly when it opened at 10 and lasted about 2.5 hours (she needed a nap). This place was awesome for her. She loved all the hands on things to do - especially the water fun for 4 and under. There was a room upstairs especially designed for younger children (4 and under). Yes, as the day progressed, it did get more crowded, and there were a few field trip kids present, but it was all very workable. If you have small children, the Children’s Discovery Museum should not be missed.