Individual buildings can be preserved in deference to former occupants or to their designers; an entire city like Port Townsend, Washington, can be an architectural museum.

• 独栋的建筑能够以不同于它设计师或者的前任的拥有者时的形式被保存下来；一个像华盛顿的汤森港样的完整的城市就，能够最终成为一个建筑的博物馆。