Originally a fishing village, New Castle is a one square mile island committed to remaining residential. 250 years of history has contributed to New Castle's varied architecture, from stately Colonials and traditional Cape Cods to elegant contemporary homes. New Castle is also home to the recently renovated and historic Wentworth by the Sea Hotel and Marina. New Castle has one elementary school, and children in grades 7 & 8 attend junior high in nearby Rye and then complete their secondary education at Portsmouth High School.