The theatre area of Pompeii is located in the southwest region of the city. There are three main buildings that make up this area: the Large Theatre, the Odeon, and the Quadriporticum. These served as an entertainment and meeting centre of the city. Pompeii had two stone theatres of its own nearly two decades before the first permanent stone theatre was erected in Rome in the 50s BC.
Description via Wikipedia. Coordinates and heritage data from the Atika atlas.
Atika pings you when you walk or drive past heritage like this. Works offline, no account needed to explore.