399 Market St. is located in the historic Old City area with Market Street access this property offers attractive, window lined office spaces with many amenities only found in modern office buildings. The building provides 24/7 access, security, a private parking garage, furnished lobby, and an outdoor private courtyard. Newly Renovated Facade and Lobby! Located in the heart of Old City on Market Street. Easy access to SEPTA bus routes, The Market-Frankford Line, I-95, I-676, and the Ben Franklin Bridge with a transit score of 97.