During the summer most any day is a great day for a swim.. Just the right ingredients are at play this time of year: sun, warmth, warmer water and more time to enjoy. What is wonderful about swimming is that is a purely democratic form of entertainment. The long stretch of water at the beach and lake seem to stretch to infinitely. Water belongs to everyone. The lake and ocean are open for business today, and there is something really nice about that. These images were taken at Lake Michigan of a little jaunt by Brooke. The Chicago Park District has a map of all the main beaches along the shore in Chicago.