With pop-up beer gardens seemingly everywhere (and now under threat), Nathaniel Popkin talks with the designer of most of them, David Fierabend of Groundswell Design Group, about the ideas behind the installations

At its annual achievement awards ceremony next week, the Preservation Alliance for Greater Philadelphia will recognize the Rohm & Haas Building for its 50th anniversary. Brad Maule explores how a collaboration designing the project—the first new building on Independence Mall—resulted in one of the largest multidisciplinary firms in the country