A three-year project to build a children’s playground and recreation area south of the Italian city of Naples has unearthed the ruins of a 2,000-year-old clifftop beach house.

Built in the first century, the panoramic mansion — which overlooks the islands of Ischia and Procida — is now partly flooded by the sea. Experts believe it could have once been the opulent residence of Pliny the Elder, the legendary author, naturalist, and commander of the Roman navy fleet stationed there.