The Sferisterio is a historic open-air theater located in Macerata, Italy. Built in the 19th century, it was originally designed for the game of sferisterio, a traditional ball game. The structure features a neoclassical style and can accommodate around 3,500 spectators. Today, the Sferisterio is renowned for hosting the annual Macerata Opera Festival, which attracts visitors from around the world. The venue is celebrated for its excellent acoustics and stunning backdrop, making it a popular site for operatic performances and cultural events throughout the summer months.