Hanton City (known locally as Lost City) is a colonial era ghost town in Smithfield, Rhode Island, United States. The remains of Hanton City consist of several stone foundations, a burial site, a defunct dam apparently used for irrigation, and a dilapidated scattering of stone walls, typifying it as a standard small New England farming community. The entire site is completely overgrown, making it nearly impossible to locate when any vegetation is present.