Architecture- Old and New(er) 1964 Philadelphia architecture. A mixture of old and new. I.M. Pei – the architect of the Society Hill Towers. There are three towers of condos on five acres. Spruce Street at 2nd Street. Share this:FacebookTwitterLinkedInEmailSkypePinterestTumblrWhatsAppLike this:Like Loading... February 29, 2016 by Ruth Categories: architectureTags: architecture, colonial, Philadelphia, photography. I. M. Pei, postaday, travel 4 Comments