30. RingCentral Coliseum — Oakland Athletics
This is the latest official name of what is simply known to those in Oakland, and around baseball, as the Coliseum. Pitchers love it because of the ample foul ground that will keep balls in play. While the club is doing its best to make it more fan friendly, the cavernous look and feel of the park that opened in the late 1960s is still an overall eye sore.
Image Source: Ballparks of Baseball