San Agustín is a historic town located in Florida, known for being the oldest continuously inhabited European-established settlement in the continental United States. Founded in 1565 by Spanish explorer Pedro Menéndez de Avilés, it features a rich blend of Spanish colonial architecture and American history. The town is famous for landmarks such as the Castillo de San Marcos, a 17th-century fortress, and the Mission Nombre de Dios, which commemorates the arrival of Christianity in the region. Today, San Agustín attracts visitors with its charming streets, museums, and vibrant cultural heritage.