City was founded in: 1889
Became a Dayton Sister City in: 1968
Osio is known for its beautiful beaches and is a favorite escape for Prime Ministers, novelists and tourists. With a temperate climate, and with convenient access to Tokyo by the Tōkaidō Main Line railway, Oiso is a relaxing escape from the big city.
Flag of Japan
City Seal/Coat of Arms of Oiso