Somerville Arts Council invites you to come light things up Somerville!!! This year, Illuminations will be a month-long lights extravaganza in which the public is able to take self-guided tours of decked-out houses any time they like! Using our handy map, it will be easy to cruise around and see the best lights in town. So whether you're a business or a resident, time to deck the halls and plug things in!