Guo Zhuang (also Guo's Villa) is the best existing traditional private residence in Hangzhou. It was built in late Qing Dynasty. With a mountain in the back and the west lake in the front, the garden is known as 'Number One Garden of the West Lake' thanks to its tranquil environment, well-preserved buildings, and tasteful landscaping layout. The key feature, or spirit, is water. Cleaverly juxtaposing shade and light, curved and straight, yin and yang, the garden of Guo Zhuang is a wonderful embodiment of the Chinese wisdom of Taoism and the Way of Nature.