Città di Castello is very rich in history and monuments and has a secular culture. The oldest part of the town, surrounded by long stretches of the sixteenth-century walls, preserves works of art of the highest quality, such as the elegant Renaissance buildings, the courtyards and the loggias of the noble palaces (Palazzo Vitelli is a wonderful example of the greatness of Città di Castello during the Renaissance), the cloisters and the naves of its churches (the monumental Cathedral, dating back to the XI century, preserves sacred art treasures). For these reasons Città di Castello is still one of the most important Renaissance architectural ensembles in Italy, especially because of its integrity. In this city it is also possible to admire masterpieces by Raphael and Luca Signorelli, as well as the complete collection of works by Alberto Burri, one of the great masters of international contemporary art, who donated all his works to his hometown. The many artistic, cultural and sports events (held in each period of the year) offer to the tourists the opportunity to make their stay in town more pleasant and enjoyable. Also the surroundings of Città di Castello are rich of sightworthy things: this allows tourists to discover places and artistic and historical memories following different paths: for example in the upper Tiber valley it is possible to choose many tours (on foot, on horseback or mountain biking) in order to enjoy the landscapes, the abbeys, the monasteries and the castles of the territory of Città di Castello.