New signs put up for renamed Kenneth C. Griffin Museum of Science and Industry

CHICAGO (WLS) -- The Museum of Science and Industry officially became the Kenneth C. Griffin Museum of Science and Industry on Sunday.

The name change follows a $125 million donation by Griffin.

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To celebrate the new name, the museum offered free admission on Sunday.

Ken Griffin is the billionaire CEO of Citadel Investments.

READ MORE | Museum of Science and Industry being renamed for billionaire Ken Griffin after historic donation