Peggy Notebaert Nature Museum
For science buffs, this Lincoln Park museum is paradise. Amble through ecosystems, bird watch with binoculars, and get wet while learning about river flow. The piece de resistance is the Judy Istock Butterfly Haven, a 2,700 square foot greenhouse with 1,000 butterflies from 11 different countries. Watch them flit around their tropical habitat and move slowly; one of these vibrant specimens might land on your shoulder.