This 35-acre, beautifully landscaped zoo is the only privately managed free zoo in the USA. Established in 1868 has one of the best collections of gorillas and chimpanzees in the world. They are home to snow leopards, sea lions, penguins, Stilts, polar bears, snakes, and many more. There are plenty of hands-on exhibits, with displays set up to be informative and engaging.
Take part in one of the daily activities such as Seal Training and Feeding, Ape Cognition and Care in the lincoln park zoo. Each activity lasts about 10 minutes. Check out this page for more details: https://www.lpzoo.org/visit/things-to-do/