Welcome to 400 Walnut where old time charm and luxury blend to create Center City Philadelphia’s most unique apartment living experience. Nestled in the heart of Philadelphia’s “Old City,†400 Walnut marries the architectural dynamism of the 1920’s through timeless finishes like art deco ceiling designs, antique millwork, and polished brass fixtures with all the comforts of modern apartment living. Be greeted by your concierge team, bake muffins for your study group, or just relax in your marble bath tub. Whether you choose a one or two bedroom, there is something for every style. Live alongside history, live at 400 Walnut.