Sankei-en is a traditional Japanese-style garden in Naka Ward, Yokohama, Japan, which opened in 1906. Sankei-en was designed and built by Tomitaro Hara (1868–1939), known by the pseudonym Sankei Hara, who was a silk trader. Almost all of its buildings are historically significant structures bought by Hara himself in locations all over the country, among them Tokyo, Kyoto, Kamakura, Gifu Prefecture, and Wakayama prefecture.