You can't visit Chicago's Millennium Park without taking an obligatory side trip to Maggie Daley Park, one of the largest and busiest playgrounds in the city. Located at 337 East Randolph Street, bounded by Randolph, Monroe, Columbus and Lake Shore Drive, connected to Millennium Park by the BP Pedestrian Bridge, it is a 25-acre public park in Chicago's Loop. Opened in 2014 and named after the former first lady of the city who died of cancer in 2011, the $60 million venue is situated on land where Daley Bicentennial Plaza previously stood. It was almost entirely remade with multiple new features, including a new field house, a quarter-mile-long ice skating ribbon, rock climbing walls, a dozen tennis courts, picnic groves, three open lawn areas, landscaped gardens and children's playground. Open from 6 a.m. to 11 p.m. daily, the three-acre Play Garden is perhaps the most popular attraction in the park. Available for children ages 12 and under, it contains six different play areas--The Wave Lawn, The Harbor, The Watering Hole, The Slide Crater, The Enchanted Forest and The Sea. The Sea is an 8,500-square-foot "play loop" that features a large metal play ship. The Enchanted Forest is a 3,590-square-foot network of pathways that also includes a Kaleidoscope or mirror maze. The 12,000-square-foot Slide Center that features two slides. The 1,200-square-foot Watering Hole is an animal-themed play space that features several plastic animals, including a whale. The 2,000-square-foot Harbor features three full-sized play boats. The 16,530-square-foot Wave Lawn cuts a swath through the center of the Play Garden.