The project of Jingjin City , designed by Werkhart International, has been awarded as the Innovative Ecological Architecture in China in January, 2006. Situated in the Beijing-Tianjin Area, Jingjin City is one of the largest new city areas in China . Werkhart International was in charge of the master planning of the city and designed a 4A-grade Japanese SPA resort and the 5-star Hyatt Hotel of 150,000 m 2 .