^ abBernal, Peggy Park (1999). The Huntington Library, Art Collections, and Botanical Gardens. San Marino, California: Huntington Library. p. 23. ISBN 9780873281348. "Moon bridges were a feature of Chinese garden architecture, adopted by the Japanese in the thirteenth century. The large, rounded bridge is usually known as a moon bridge because the arch and the reflection in the water below form a full form a full moon shape, and also because “moon viewing” from beneath the bridge was a diversion for estate owners cruising on their private lakes."