大家好! I was recently reading an article about Buckingham Palace and came across the following sentence: "宫殿坐落在威斯敏斯特,是国家庆典和王室欢迎礼举行场地之一,也是一处重要的旅游景点。". What does "也是一处重要的旅游景点" mean? Is 处 (pronounced chu4 here?) a classifier (量词)? Thanks!