20. Philadelphia Phillies: Citizens Bank Park
Citizens Bank Park opened its doors in 2004 and has been the beloved home of the Philadelphia Phillies ever since. The coolest part of Citizens Bank Park is Ashburn Alley, which is named after Phillies Hall of Fame outfielder Richie Ashburn. Ashburn Alley is an open space in the outfield that features shops, restaurants and memorabilia from Phillies history.