A towering office building in Center City may not seem like a good place to see local—and extremely Instagrammable—street art. But starting Memorial Day weekend, it will be, thanks to “Photo Pop Philly.” The limited-time pop-up exhibition decorates a five-room retail space inside the historic Philadelphia Building with commissioned works by some of the city’s best-known street artists. The works are centered around a patriotic color theme—red, white and blue—but with an edge only street art can bring. Expect pieces by artists whose works you’ve surely seen on the streets of Philly, such Amberella’s gothic, message-containing hearts, Nero’s eye-catching sticker art, Martha Rich’s colorful speech bubbles and Kara Khan will roll in her pop-up Polaroid photo booth. Check out more of our Photo Pop Philly coverage here.