Gillian's Island is a small waterpark located on the boardwalk at Ocean City. It has 6 slides, and a lazy river as well as a children's section. It doesn't have as much as other waterpark's, but it is still a lot of fun. Going during the busy season will mean lines, so try to go off season if possible. They also have a miniature golf course that is a lot of fun as well. Down the boardwalk a bit they also have a small amusement park with rides and games.