El vuelo del Plus Ultra Curiosity · Palos de la Frontera, Comarca Metropolitana de Huelva, Huelva Image of Palos de la Frontera, not of the place itself. The seaplane Plus Ultra took off from Palos de la Frontera on 22 January 1926 bound for Buenos Aires, a feat that earned the town city status, granted by Alfonso XIII. 22 de enero de 1926 Photo: CarlosVdeHabsburgo (CC BY-SA 4.0) What to see and do in Palos de la Frontera