Enjoy a merger of art and technology when this annual festival takes over empty storefronts and stately theaters alike. This year features performances by Grammy Award-winning pianist Angelin Chang and Opera Cleveland. You can also interact with a humanistic robot and explore a Superman exhibit that reveals the Man of Steel’s Cleveland origins. Don’t worry about directions. Just head downtown; it’ll be easy to find. One hundred red weather balloons will hover over the festival during its run.