The Double-Ring-Shaped Longevity Pavilion, strange and unique in structure, and gracious and elegant in style, is composed of two linked round pavilions each with a double eaved, malachite-blue glazed tile roof. A masterpiece of ancient architecture, it is unique among the ancient structures in China. It was originally located in the Middle and South Seas. It is said that emperor Qianlong, had it built in 1741 to celebrate the 50^th anniversary of his mother the Empress Dowager's birthday. Its shape symbolizes a pair of peaches and the stairways in front of the pavilion look like the tips of the two peaches—all symbolically meaning "Harmony, Auspiciousness and longevity". It was moved here in 1975.