Nemi is a town and comune in the Metropolitan City of Rome (central Italy), in the Alban Hills overlooking Lake Nemi, a volcanic crater lake. It is 6 kilometres (4 mi) northwest of Velletri and about 30 kilometres (19 mi) southeast of Rome. The town's name derives from the Latin nemus, or "holy wood". In antiquity the area had no town, but the grove was the site of one of the most famous of Roman cults and temples: the Temple of Diana Nemorensis. In 1514 Marcantonio I Colonna gave to Nemi the "Statuti e Capituli del Castello di Nemi". Main sights. The Temple of Diana Nemorensis.
https://en.wikipedia.org/wiki/Nemi