Chicago Botanic Garden
2009 attendance: 890,167
2009 student visits: 20,432
Free every day

National Museum of Mexican Art
2009 attendance: 165,085
2009 student visits: 40,427
Free every day

The Peggy Notebaert Nature Museum
2009 attendance: 244,123
2009 student visits: 44,613
2009 free days: 52

The Field Museum
2009 attendance: 1,325,007
2009 student visits: 219,950
2009 free days: 52

Museum of Science and Industry
2009 attendance: 1,605,020
2009 student visits: 266,027
2009 free days: 52

Chicago Zoological Society/Brookfield Zoo
2009 attendance: 2,228,675
2009 student visits: 233,180
2009 free days: 27

The Art Institute of Chicago
2009 attendance: 1,846,889
2009 student visits: 93,002
2009 free days: 68

Adler Planetarium
2009 attendance: 437,351
2009 student visits: 58,410
2009 free days: 52

Museum of Contemporary Art
2009 attendance: 300,241
2009 student visits: 17,325
2009 free days: 52

DuSable Museum of African American History
2009 attendance: 157,800
2009 student visits: 15,978
2009 free days: 52

John G. Shedd Aquarium
2009 attendance: 1,964,791
2009 student visits: 220,060
2009 free days: 52

Chicago Children’s Museum
2009 attendance: 420,121
2009 student visits: 93,827
2009 free days: 12 days

Lincoln Park Zoo
2009 attendance: 3,000,000
2009 student visits: 140,000
Free every day

Chicago History Museum
2009 attendance: 259,669
2009 student visits: 54,466
2009 free days: 52