Visit the Brookfield Zoo for free on today. Each Tuesday and Thursday in October and November are free with a reserved ticket. Online reservations are required with times available in 20-minute increments from 9:30 a.m. and 3:30 p.m.
Brookfield Zoo offers free admission Tuesdays, Thursdays. See story here. https://abc7chicago.com/community-events/visit-brookfield-zoo-for-free/7181989/