Children play as they cool down at the Yangjae-cheon outdoor swimming pool in Seocho-gu, southern Seoul, Tuesday. The pool will be opened from 9 a.m. to 8 p.m. through Aug. 31. Copyright ⓒ Aju Press All rights reserved. Related Han River pool opens as heat wave arrives early Why Multigenerational Families Are Ditching Flag-Led Tours for Private Pool Villas S. Korea's OTT service strives to maintain user pool in competition with Netflix