Catch a Navy Pier Fireworks Show In celebration of reopening, Navy Pier hosts a 10-minute fireworks show every Saturday throughout the month of May. Viewers can enjoy the show at any open area on Navy Pier at 9 p.m. Saturday. Watch the Buckingham Fountain Switch on For Summer In a virtual "Switch on Summer" event Saturday, Chicago Mayor Lori Lightfoot, ComEd CEO Joe Dominguez and others will gather to see the Buckingham Fountain turn on for the first time in over a year. Starting at 2 p.m., Chicagoans can watch a free livestream of the event here, where a sweepstakes winner will have the chance to switch on the fountain.