Illustrate a vibrant park situated in a futuristic cityscape during the night hours. Envision genetically engineered plants that emanate a gentle glow. Have floating drones meticulously caring for the park's environment. Visualize artificial rivers brimming with purified water and families walking along levitating paths. Include AI companions of different shapes and sizes, joyously interacting and playing games with children of varied descent and gender. Capture the harmony between technology and nature in this future representation of an urban park.