Portsmouth

City, Rockingham county, southeastern New Hampshire, U.S., across the Piscataqua River from Kittery, Maine, on the Atlantic coast. It is New Hampshire's oldest settlement, second oldest city, first capital, and only seaport. In 1623 a fishing settlement was built at the river's mouth. First called Piscataqua and then Strawbery Banke, it became a bustling colonial port. The town,