Attendance increased by about 600,000 at Chicago-area zoos and museums last year.
Fifteen Chicago-area attractions are members of the Museums Work for Chicago group, which released attendance data on Thursday. The group says attendance was 15.1 million during 2012. That's up from 14.4 million during 2011, when attendance remained steady from 2010.
Chicago's Lincoln Park Zoo topped the list with 3.5 million visitors. Brookfield Zoo had 2.3 million visitors and the Shedd Aquarium had 2.1 million. The Chicago Children's Museum saw a 10 percent increase and the Chicago History Museum had a 9 percent increase.