St. Augustine is a city in the northeast section of Florida and the county seat of St. Johns County, Florida, United States. Founded in 1565 by Spanish explorer and admiral, Pedro Menéndez de Avilés, it is the oldest continuously occupied European-established city and port in the continental United States. St. Augustine lies in a region of Florida known as "The First Coast", which extends from Amelia Island in the north to Jacksonville, St. Augustine and Palm Coast in the south.