is located within Daisen Park, in Sakai-ku, Sakai City, in Osaka Prefecture.The exhibition hall of approx. 1,330 square meters is divided up into areas for ancient times, the middle ages, early modern, and modern times.The museum was opened in 1980, to commemorate the 90th anniversary of Sakai’s municipalization.The present (2017-) director of the museum is Ken'ichi Sudo (ex-director and an emeritus professor at the National Museum of Ethnology). Susumu Nakanishi (Emeritus Professor at the International Research Center for Japanese Studies) was a former (2008-2013) director of the museum. The museum showcases Sakai’s history from ancient times to the present day, featuring artifacts excavated from the Mozu Kofun Group, represented by the Emperor Nintoku Tumulus (The Mozu Kofun Group was together with the Furuichi Kofun Group, inscribed as a UNESCO World Heritage Site as the Mozu-Furuichi Kofun Group: Mounded Tombs of Ancient Japan, on 6 July 2019.[1]), goods and historical documents remaining from Sakai’s period of high trade as an autonomous city, and materials about Sakai-born historical characters, including Gyōki and Sen-no Rikyu.
The museum is located in Daisen Park, in the middle of the Mozu Kofun Group, along with the Sakai Municipal Library, Sakai Bicycle Museum, Sakai City Japanese Gardens, Sakai City Urban Greenification Center.The International Research Centre for Intangible Cultural Heritage in Asia-Pacific Region opened its office in Sakai City Museum in 2011.