📜 Abandoned panopticon prison on Santo Stefano island, Italy. 🔍 Built in the late 18th century, closed in 1965. Site of historical revolts and a prisoners' coup. # Why Go 🏛️ Explore a unique circular prison design (panopticon) 📜 Discover rich history of revolts and political prisoners 🏝️ Visit a tiny island in the Tyrrhenian Sea # Tips 🚶‍♀️ Accessible via guided tours of the Pontine Islands.