A crowd gathers on Brookfield Zoo Chicago’s East Mall during a Roaring Nights concert, with the zoo’s Ferris wheel visible. | Provided by Brookfield Zoo Chicago. Animal Welfare Brookfield Zoo turns its East Mall into a concert venue. Here’s how it works. Roaring Nights brings sold out concerts to Brookfield Zoo Chicago’s East Mall, where organizers must balance visitor access, live entertainment and animal welfare. By NaBeela Washington • 4 min read