宁寿宫花园的掇山与置石艺术
The Created Mountains in Qianlong Gardens and the Art of Arranging Rocks
乾隆花园（官方名称宁寿宫花园）文物保护项目是故宫博物院与美国世界遗产基金会正在计划推进中的合作项目。
The Qianlong garden restoration project is a jointly planned project of the Palace Museum and the World Monument Fund of the US .
宁寿宫