The Allianz Arena [ʔaˈli̯ant͡s ʔaˈʁeːna] is a football stadium in Munich, Bavaria, Germany with a 75,024 seating capacity. Widely known for its exterior of inflated ETFE plastic panels, it is the first stadium in the world with a full color-changing color exterior. Located at 25 Werner-Heisenberg-Allee at the northern edge of Munich's Schwabing-Freimann borough on the Fröttmaning Heath, it is the third largest arena in Germany behind Signal Iduna Park in Dortmund and the Olympiastadion in Berlin.