正当七十年代初期美国陷入经济不景气,建筑业萧条,设计事务所纷纷倒闭之时,建筑师约翰·波特曼(John Portman)却门庭若市,他稳步地完成他的理想——美国最富有想象力的城市开发规划——亚特兰大的桃树中心(图1)及旧金山的艾姆巴底诺中心(图2),并创造了他的“共享空间”(Shared space)。他的 When the United States fell into a recession in the early 1970s and the construction industry slumped and design firms closed down, architect John Portman made a steady progress in fulfilling his ideals—the United States’ most imaginative. The force of the city development plan - Atlanta peach tree center (Figure 1) and San Francisco’s Ambardino Center (Figure 2), and created his “Shared space” (Shared space) (Shared space) (Shared space). his