The CTA offers a variety of passes that save money on train and bus fares. A 1-day pass costs $10 and is good for unlimited rides for 24 hours. If you plan to travel more than three times in a day you’ll save money (a regular ticket costs $3, except for the train from O’Hare, which costs $5). The 3-day...

This downtown park is a big kid pleaser thanks to its enchanted forest and pirate-themed playgrounds. There’s also an 18-hole mini golf course, rock climbing wall and skating ribbon (in-line in summer, ice-skating in winter). These activities require a fee. All of the tennis courts are free (unless you want to make a reservation; then there’s a charge). Picnic tables...