The Salzburg Festival will expand its facilities by 10,000 square metres in the coming years, increasing its footprint by more than a quarter, the festival’s business manager, Lukas Crepaz, said on Wednesday. The renovation and expansion project, for which around €400 million ($445 million) has been budgeted until 2031, will begin in early September, right after the end of this year’s festival, Crepaz said. Venues and facilities already located on and inside the Mönchsberg mountain that flanks the Austrian city will be expanded, he said. This includes the Felsenreitschule, which was used as a …