BruumRuum! is a permanent installation designed in 2013 by Artec3 Studio. The lights on the floor (550 LEDs embedded throughout an area of 3,300 sqm) react to the intensity of voices. There are two speakers where, from 9 to 11pm, you can say ‘hola’ or anything you’d like to see transformed into light design. There are also sensors installed around the plaza so that the colors of light also change according to the noises of the city.