McDonald's giving away free Shamrock Shakes at Daley Center

The classic vanilla mint milkshake is back and better than ever. (McDonald's)

McDonald's is kicking off St. Patrick's Day celebrations early Wednesday by giving out free Shamrock Shakes to people who stop by the Daley Center between 5 p.m. and 9 p.m.

The path to your free Shamrock Shake will be guided by a giant 80-foot-wide, 16-feet-tall "Shambow" posted up at the Daley Center, 50 W. Washington St. 

The deal is limited to one free Shamrock Shake per person.