Théâtre Antique de Vienne

This vast, well-preserved Roman amphitheater was built around 40–50 CE at the base of Mt Pipet, on the eastern fringes of the old town. At that time, it was one of the largest theaters in the Roman empire – it was designed to seat between 11,000 and 13,000 spectators. It's a key venue during Vienne's Jazz Festival in June and July and hosts performances throughout the summer.