Chase Field's on-site swimming pool

Chase Field, the Arizona Diamondbacks' home stadium which opened in 1998, includes a private swimming pool in the upper seating area behind home plate that can be rented for games and events. The presence of the pool-one of the few in Major League Baseball stadiums-has become a frequently mentioned local trivia item about Phoenix sports venues. The stadium is also noted for its retractable roof, an important feature in Phoenix's desert climate.