As soon as it was inaugurated in 1780, everybody who was anybody in the performing arts wanted to perform in this gorgeous theater. Then as now, top names in opera, classical music, and dance grace the stage here. If you don’t have time for a show, you can still take a tour on Wednesday and Saturday between 2:30pm and 6:30pm (6€ adults, free for visitors 26 and under), or at least pop in and check out the magnificent staircase.