text: Chase Field may be the most technologically-advanced stadium in the major leagues.  A a 136-feet-by-46-feet high definition LED board wraps around the stands, offering dynamic video visuals when players come up to bat and fascinating computer graphics between innings or when trying to get fans to clap or get into the game.  And the park has a sound system to match.\n\nMaybe the most impressive aspect of Chase Field is the architecture and engineering.  The main problem faced by the stadium's designers is that Phoenix is hot.  Hotter than hot.  So how do you make a stadium comfortable and cool when its 120 degrees F outside?  You could just design an indoor park like the Metrodome in Minnesota, but baseball indoors is awful.  Instead, the stadium uses a massive retractable roof.  The roof remains closed during sweltering days until the sun goes down.  Then in just 5 minutes, the roof retracts and billboards along the stadium wall open allowing the evening part of the game to be played in the open air.  It's an impressive thing to watch and fascinating to consider what engineers and architects can do now.\n\nThere's plenty of other charming touches, including a swimming pool just above center field.  All in all, it's a solid place to catch a game.