In the Summer on Sundays after a Saturday of partying, people like to lounge on Chicago's most popular beach, North Avenue Beach. There you'll find all the hotties and hard bodies Chicago has to offer. 10am is prime time to arrive. You also have access to beach volleyball courts. Those you have to reserve but if you're lucky you can find an open one. Afterwards you can go grab a burger and drinks at Castaways which is the the boat looking restaurant that sits on the beach bike path.