 The city is the site of Kōraku-en, known as one of the top three traditional gardens in Japan, and Okayama Castle, which is ranked among the best 100 Japanese castles.The city is famous as the setting of the Japanese fable "Momotarō".Before the Muromachi period, Okayama was one corner of a farm region and included a small castle built by the Kanemitsu.