Ducal Palace of Gandia built
1400 CE.
Shown on the map at 38.966°, -0.180°.
The Ducal Palace of Gandia was, from the 14th century, the residence of the Royal Dukes of Gandía, and from 1485, the Borja family. It was the birthplace of Saint Francis Borja. The oldest part of the building dates from the 15th century in Valencian Gothic style, but was restored and turned into a sanctuary by the Society of Jesus. It is attached to the wall that surrounds the city and has two gates, a Gothic one and one from the Renaissance. Its remarkable interior has some interesting spaces, like the Golden Gallery, made in Baroque style, and the Crown Hall. Initially the Palace was designed as a civil Gothic style urban castle and was ultimately transformed into a comfortable fortified palace. The main entrance to the Palacio Ducal is a robust door with a rounded arch, which together with the hallways are the oldest elements of the Gothic palace. You enter from this area and there is an imposing central parade ground with an impressive exterior staircase by which you ascend to the halls, among which the Baroque style Salón de Coronas and Galeria Dorada are notable.
Text from the Wikipedia article Ducal Palace of Gandia, licensed CC BY-SA 4.0.