Overview
Domed stadiums are fully enclosed ballparks that eliminate weather-related cancellations, providing significant commercial advantages. Tokyo Dome (opened 1988) was Japan's first dome, followed by Fukuoka Dome (now PayPay Dome, 1993), Osaka Dome (now Kyocera Dome Osaka, 1997), Nagoya Dome (now Vantelin Dome Nagoya, 1997), Sapporo Dome (2001), and Seibu Dome (now Belluna Dome, roof added 1999). While domes offer climate-controlled comfort and scheduling reliability, they present drawbacks: artificial turf increases physical strain on players, the absence of wind and sunlight homogenizes batted ball behavior, and construction and maintenance costs are substantial. Recent trends show diversification in stadium philosophy, with retractable-roof designs (PayPay Dome) and a return to open-air ballpark concepts like ES CON Field Hokkaido, which prioritizes the outdoor baseball experience.