Many people visit a park to get a break from the daily grind and reflect on life. The Sejong City Glass Wall, about 75 miles from Seoul, Korea, heightens the experience. The towering media glass wall implements interactive, digital media to enable bidirectional communication in a multi-perceptional experience. LEDs between two glass surfaces are connected wirelessly through a transparent indium tin oxide (ITO) conductive layer, shining an image that’s visible on both sides of the wall. From the movement of birds, butterflies, fish, fireworks, rain, shapes, water fountains—and even the alphabet—just about anything can pop up, reacting  via a motion detector to visitors’ movements.