Inside here are 2 huge theatres in what was originally the riding school and stable for the Archbishops. Austria holds many music festivals throughout the year, the most popular is the Salzburg Festival (Festspiele) held during July and August with many famous names performing here. The larger hall seats over 1000 people. After WWII ended they decided to enlarge the Festhaus an so blasted a thundering 2 million cubic feet of rock out of the terrace to make extra space between the 2 houses.