The Newport Tower, also known as the Old Stone Mill, is a round stone tower located in Touro Park in Newport, Rhode Island, the remains of a windmill built in the mid-17th century. It has received attention due to speculation that it is actually several centuries older and would thus represent evidence of pre-Columbian trans-oceanic contact. Carbon dating shows this belief to be incorrect. Other names given to the tower include Round Tower, Touro Tower, Viking Tower, and Newport Stone Tower.