MARINA BAY SANDS HOTEL www . marinabaysands . com The Marina Bay Sands Hotel , based in Singapore , warranted a construction cost of $ 5.66bn , according to Express . Known for its 1.4mn litre pool on the roof , the world ’ s largest infinity pool according to BASF , it opened its doors in 2010 . This was reportedly one year after its intended opening date , due to construction material costs . Architect Magazine credits the 9mn sq ft property ’ s construction to over 40 groups . Owned by Las Vegas Sands Corp ., its primary architect was Safdie Architects , with Aedas as the executive architects , and Ssangyong Engineering & Construction Co . the construction manager . According to the hotel ’ s website , it is the largest hotel in Singapore , and the 34th largest in the world . Its three 55-storey towers received 38.5mn visitors in 2012 .