San Francisco-based SB Architects and the Mission Hills Group have completed the Mission Hills Volcanic Mineral Springs and Spa, one of the world’s largest spa destinations. Located on the northern coast of China’s Hainan Island, the spa and volcanic minerals spring join the Mission Hills – Haikou five-star resort, offering wellness, leisure, recreation, entertainment, and dining to its guests. The entire land area for the facility measures 950,000 sf and is home to the largest natural springs reserve in the nation. The spa itself is surrounded by 473,000 sf of landscaped gardens and more than 150 springs and water features. About 29 spa villas provide a private and exclusive sanctuary for visitors.