It seems that the castle of São João de Arad was the oldest of the castles, and this information was reached based on the presence of a watchtower in it that was built in the fifteenth century during the reign of King John II of Portugal, it seems that while the architect Alexandre Massai was ) The fortress of Santa Catarina is being built on the other side of the river, this castle has also been strengthened! If you are in the West region of Portimão, do not miss to visit it to learn about its most important historical events.