Chicago's Botanic Garden has 26 gardens, nine islands and four natural areas on 385 acres of land. It's almost impossible to see such a large scenic spot in a day. I suggest you watch it bit by bit. My favorite gardens include waterfall gardens, Japanese gardens, and rose gardens. Many people bring their bicycles to Green Bay Trail and North Branch Trail for sightseeing and sports on weekends, and they are free all the year round.