beijing poolHOTEL POOLS The Emperor at Qianmen An outdoor rooftop pool facing the Forbidden City. Cost: RMB 258 (three hours) Opening hours and contact information: Daily 11am-midnht. 87 Xianyukou Jie, QianmenFind out where to cool down and have fun in the water during the hot Beijing summer. The Beijinger recommends various pools for different purposes, from slides and waves to laps and sunbathing.