The remains of this fortress wind around the ridge above Sagunt for practically one kilometre, a silent witnesses of the battle between Saguntum and Hannibal, and the foundations for later constructions made by Romans, Goths, Moors and Christians. The Plaza de Almenara , named the Saluquia by the Arabs, is the most Oriental part of the Castle, with ancient cisterns, Roman pavings and buildings from different periods. The arms patio, now called the Plaza de Santa Maria Magdalena, is the nucleus of the Castle containing remains of the Roman forum, temples, shafts and columns, and a cistern sculpted in rock from the Roman period. The Plaza de la Conejera once formed part of the Arab fortress. This is also known as the Pla a dels nou pilars , the nine-columned square, because of an ancient cistern located in its northernmost corner.
Access is from the arms patio.
The Plaza de la Ciudadela is the highest enclosure of the Castle. This was once named the Plaza de Hercules after a tower of the same name that withstood the ravages of time until the seige of the fortress by French troops in 1811. The Plaza del Dos de Mayo , looking to the west, received this name after a heroic defence against field marshal Suchet in the War of Independence. Also of note is the Plaza de San Fernando and Plaza de los Estudiantes . From this natural lookout point on the crest of the Sierra Calderona , there are magnificent panoramas of the local orchards running down to the blue Mediterranean.