Shichahai 什刹海

Shichahai is a historic scenic area consisting of three lakes in the north of central Beijing. They are located directly northwest of the Forbidden City and north of the Beihai Lake. (Ref. wikipedia)
什刹海位于紫禁城东北，是北京市历史文化旅游风景区。它包括前海、后海和西海（又称积水潭）三个水域及临近地区，与“前三海”相呼应，俗称“后三海”。什刹海也写作“十刹海”，四周原有十座佛寺，故有此称。（引自百度百科）Läs mer