Architecture, Building and Structure Design Yunda Central Plaza Mixed-use Architecture by hpa Ho and Partners Architects Engineers and Development Consultants Limited Yunda Central Plaza is a 123,031 square meters landmark. It is an office, retail and hotel destination featuring six levels of shopping anchored by two towers. The 100 meter tall W-Hotel tower sits alongside an iconic 250 meter tall tower housing a St. Regis hotel which is one of the tallest approved skyscrapers in Changsha. This development was the fifth largest twin hotel tower project in China and the second largest in central China.