Lincoln Park Zoo is probably one of only a few fee zoos in the nation. It is lovely. See all the classic zoo animals like giraffes, elephants, lions. The Ape House is great and there is an aviary for bird lovers. For Christmas there is a zoo lights festival and visitors can wander among festive animal themed decorative light configurations as well as see the real animals.
In the summer, there is a monthly "Jammin' at the Zoo" with national and regional acts like Sonia Dada, Richard Thompson, Joan Osborne with Double Trouble. This appears to be geared for the 20 to 30 somethings.
Parking is $8 in the zoo lot.