The Summer Palace is a palace in Beijing, China. The Summer Palace is mainly dominated by Longevity Hill and the Kunming Lake. It covers an expanse of 2.9 square kilometers, three quarters of which is water. Longevity Hill is about 60 meters high and houses many buildings positioned in sequence. The front hill is rich in the splendid halls and pavilions, while the back hill, in sharp contrast, is quiet with natural beauty. The central Kunming Lake covering 2.2 square kilometers was entirely man made and the excavated soil was used to build Longevity Hill. In the Summer Palace, one finds a variety of palaces, gardens, and other classical-style architectural structures.

The Marble Boat, also known as the Boat of Purity and Ease is a lakeside pavilion on the grounds of the Summer Palace in Beijing, China. It was first erected in 1755 during the reign of the Qianlong Emperor. The original pavilion was made from a base of large stone blocks which supported a wooden superstructure done in a traditional Chinese design.