From the entrance to the English Garden, continuing to the left, you happen upon the Aperia, a hemicycle structure in a neoclassical style embellished with a statue of Ceres in its central niche. Designed as an artificial basin to collect water, the area was used in the French period for the production of honey, and in 1828 as a greenhouse for "forced cultivation". Since 1986, it has been used as an open-air theatre.