The Adler Planetarium View Full Caption Flickr/Chris Smith

DOWNTOWN — Three of Chicago's leading cultural institutions have an offer that will truly help you save instead of spend on Presidents Day.

All Illinois residents are eligible for free general admission at Adler Planetarium, Field Museum, and Shedd Aquarium on Monday.

Discounted all-access passes also will be available at these prices:

•Adler: $17.95 for adults and $16.95 for children.

•Field: $18 for adults, $15 for seniors and students, and $13 for children.

•Shedd: $22.95 for adults and $15.95 for children.

Adler will be open from 9:30 a.m. to 5 p.m., Field from 9 a.m. to 5 p.m., and Shedd from 9 a.m. to 6 p.m. Monday. All three attractions are located on the Museum Campus off South Lake Shore Drive.

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