An all-weather dome with a maximum capacity of 55,000 people. throughout the year, various events such as professional baseball games and live music performances are held here. there are also a variety of fun events, such as tours that allow you to experience the field after the game and tours that allow you to go behind the scenes of the dome, such as the bullpen, which is normally off-limits. on orix buffaloes game days, there are special tours that allow you to watch the players warming up and batting practice.