Urban DesignCreative Houses Modern Concrete U Retreat by IDMM Architects int(29) string(9) "_________" NULLPosted on September 24, 2018 29 shares 20 0 9 Bordered by the Sori-San mountain range in Korea, the U retreat by IDMM architects sits at the core of the Sari-Gol valley in Hongcheon-gun Daegok-ri. Looking down on the site… View Post