A Benedictine abbey, the Church of San Pietro was founded in the 10th century on the Monte Calvario. It functioned as the cathedral of Perugia in the 6th century (located outside the town walls at that time), prior to the status of cathedral being given to Santo Stefano in Castellare (demolished during the construction of the abbey and church of San Domenico) around 936 and then finally to San Lorenzo, the actual cathedral.The main court is dominated by the polygonal clock-tower, allegedly built on the site of an Etruscan tomb that was used for its construction in the 13th century. The sacristy was added in 1451 and contains inlaid furniture from 1472, as well as what remains of a pavement in Deruta tiles. The frescoes are by Danti and Peccenini. The paintings hanging here are by Perugino, Parmigianino and Raphael. The interior is a mixture of ancient columns and has a Palaeochristian basilical structure. The Gothic wooden choir is considered to be one of the finest in Italy and was completed between 1525 and 1591). The painted and guilded wooden lacunar ceiling is from 1556, while the large quantity of frescos and paintings by various artists include some by Antonio Vassillacchi (1592-94), Sassoferrato, Guido Reni, Vasari, Guerricino and Perugino (Pietro Vannucci). A door in the apse of the wooden choir leeds to a tiny balcony that affords a stunning view over the Valle Umbra as far as Assisi, Monte Subasio, Bettona, Montefalco and the Apennines.The door frame contains graffitis of some famous people, Queen Elizabeth being one, who visited there in 1992. The view from the tiny balcony. Assissi in the distance. Our next stop. The Holy Trinity depicted as female figures. Lake Trasimeno (Italian: Lago Trasimeno, Latin: Trasumennus; Etruscan Tarśmina[), also referred to as Trasimene or Thrasimene in English, is the largest lake on the Italian peninsula, part of the province of Perugia, in the Umbria region. The Lake is located in the south of the Po River and to the north of the nearby Tiber River, with a surface area of 128 km2 (49.4 sq mi), slightly less than Lake Como. No major river flows directly into or out of Lake Trasimeno and the water level fluctuates significantly according to rainfall levels and the seasonal demands from the towns, villages and farms near the shore.