Mural Arts Philadelphia’s citywide Monument Lab continues with a Saturday Spotlight event at Washington Square, with music and food from 1–4 p.m. This event will feature Monument Lab artists Kaitlin Pomerantz and Marisa Williamson, whose projects reveal missing or lost Philadelphia stories. Pomerantz’s On the Threshold explores the city’s stoop culture, while Williamson’s Sweet Chariot is an interactive scavenger hunt app that will lead a narrative about African American history in and around Washington Square. FREE.