Tags Goldman Sachs and the Qatar Investment Authority Goldman Sachs and QIA Vie to acquire Ha Noi's 72-storey building Thursday, Apr 23, 2015 Goldman Sachs and the Qatar Investment Authority are reported to have bid for Keangnam Hanoi Landmark Tower, the highest building in Viet Nam''s capital city whose value is estimated at more than US$1 billion, according to the Korea Economic Daily.