Dortmund's Westfalenstadion holds 80,645 and of that number, 25,000 stand – yes, stand – on the Sudtribune terrace behind one of the goals (capacity is reduced for Champions League matches due to Uefa rules requiring seats). They are known as the Yellow Wall and they have the capacity to assault the senses with the noise that they generate. "Nobody has the atmosphere that we have," says the club's defender, Neven Subotic. "To have 25,000 fans behind the South Wall is the biggest difference to any club in the world." Dortmund could make more money by adding to their 25 executive boxes but they do not want to compromise the stadium's raw passion. "We have no place for more boxes because it would mean losing something else," Hans-Joachim Watzke, the chief executive, says. "There is no box on the south stand. We must keep our mentality." The club does not sell beer during the game to their VIPs so that even they are not behind glass for the 90 minutes.