The Balaiana Castle is situated on Mount San Leonardo, at 299 metres above sea level, dominating the surrounding valley. You can walk through a staircase carved between granite rocks where the start path is located in the parking area, just 5 km from the village, on the road to Arzachena.
The castle's unique architecture, with features such as the special interlocking blocks of granite corners, dates back to the 12th century. The castle was destroyed by the army of Alfonso of Aragon, who had razed the structure almost completely to the ground in 1442.
The small church dedicated to San Leonardo was built as a chapel of the castle and is a rare example of Romanesque architecture in Gallura. The chapel can be reached via a path just a few dozen metres north of the Castle. The similarity between the churches in Corsica suggests that in the second half of the 12th century there was a shift between the islands of the Mediterranean and the manufacturers who used the granite stone.References:
The Palace of the Kings of Navarre of Olite was one of the seats of the Court of the Kingdom of Navarre, since the reign of Charles III 'the Noble' until its conquest by Castile (1512). The fortification is both castle and palace, although it was built more like a courtier building to fulfill a military function.
On an ancient Roman fortification was built during the reign of Sancho VII of Navarre (13th century) and extended by his successors Theobald I and Theobald II, which the latter was is installed in the palace in 1269 and there he signed the consent letter for the wedding of Blanche of Artois with his brother Henry I of Navarre, who in turn, Henry I since 1271 used the palace as a temporary residence. This ancient area is known as the Old Palace.
Then the palace was housing the Navarrese court from the 14th until 16th centuries, Since the annexation (integration) of the kingdom of Navarre for the Crown of Castile in 1512 began the decline of the castle and therefore its practically neglect and deterioration. At that time it was an official residence for the Viceroys of Navarre.
In 1813 Navarrese guerrilla fighter Espoz y Mina during the Napoleonic French Invasion burned the palace with the aim to French could not make forts in it, which almost brought in ruin. It is since 1937 when architects José and Javier Yarnoz Larrosa began the rehabilitation (except the non-damaged church) for the castle palace, giving it back its original appearance and see today. The restoration work was completed in 1967 and was paid by the Foral Government of Navarre.