The 14-acre, multi-tower Schuylkill Yards development is gaining traction as completion nears at the first building, the four-story Bulletin Building at 3025 Market Street in University City, West Philadelphia. Originally built in 1954, the commercial building has been incorporated into the greater development and overhauled on the outside and inside by developer Brandywine Realty Trust, which is responsible for the whole Schuylkill Yards project, and Practice for Architecture and Urbanism, which is also designing a number of buildings in the development. The modern renovation includes office, lab and science space, as well as 10,000 square feet of retail on the ground floor. Spark Therapeutics is the building’s primary tenant.