Yomiuriland is an amusement park in Inagi, Tokyo, Japan that first opened on 19 March 1964. It is situated on hillsides, and features rides such as roller coasters and water flumes. It is home to Yomiuri Giants Stadium, one of the training fields for the Yomiuri Giants baseball team, and was the primary training ground before Tokyo Dome was completed. It is operated and run by Yomiuriland Co., Ltd., a wholly-owned subsidiary of The Yomiuri Shimbun Holdings.