🇮🇹 Ancient Underwater Roman City of Baia :. Baia, founded around the 2nd century BCE in the Gulf of Naples, Italy, was a Roman resort known for villas, thermal baths, and mosaics. Volcanic activity and coastal subsidence gradually submerged parts of the city, leaving an underwater archaeological site that preserves Roman architecture and artifacts. — x.com/HeritageMatterz 📱