The castle of Asklipio (Asklepieion) was built in 1479 by Grand Master D'Aubusson at the site of an ancient lighthouse. In the Byzantine period, during the time of the Knights, the castle also offered the inhabitants of the surrounding villages protection against enemy attacks.
It had rectangular bulwarks and two massive towers. Its only gate leads to the south-east corner tower. Two construction stages can be distinguished. Inside the castle there are preserved ruins of buildings and two tanks. This is the place where a significant inscription dated 1473 and referring to the activity of Roman Catholic priests in the area comes from.
The castle is easily accessible, and a number of signs direct the visitors all over the route on the winding mountain. It is also easily seen from the valley below and the main road. If you are there by car, just follow the signs and make sure you park your vehicle in the designated parking area.
References:The Cathedral of Saint Mary Major, often called Lisbon Cathedral or simply the Sé, is a Roman Catholic cathedral located in Lisbon, Portugal. The oldest church in the city, it is the seat of the Patriarchate of Lisbon. The cathedral has survived many earthquakes and has been modified, renovated and restored several times. It is nowadays a mix of different architectural styles.
The site where it stands was the principal mosque of Lisbon when it was an Arab settlement. The construction of the cathedral started around 1150, three years after the city was conquered from the Moors during the Second Crusade. Shortly after the victory the English knight Gilbert of Hastings was named bishop of the city of Lisbon.
One good reason to visit the Cathedral is to visit its charming cloisters located in the back. There are several tombs in the cathedral, the most notable of which is the beautifully sculpted tomb of Lopo Fernandes Pacheco and his wife.