Ever heard of a light garden? I hadn’t. But you best believe when I stumbled into a park filled with touch sensitive LED lights, post Industry Party, I was pretty excited.  At 5th and Guadalupe, in Republic Square Park, SXSW Eco has set up an interactive and visually stunning art installation featuring multimedia artists from around the country. Take a break from drinking, eating, panel-ing, and live-music-watching and check it out.