Quote from the UNESCO website: "The medieval city of Assisi, the birthplace of St. Francis, built on a hill, was in close connection with the activities of the Franciscan order. Its masterpieces of medieval art, such as the Basilica of San Francisco, the murals of Cimabue, Pietro Lorenzetti, Simone Martini and Giotto, made Assisi the main starting point in the development of Italian and European art and architecture."
From the railway station, Assisi can be reached by bus or walk 3 km. Of these, you walk about a kilometer along a path partially paved with red brick. And each brick is engraved with the name, surname and city of residence of some Italian. Offhand about 20,000 names. I didn't find out who these people are, but the idea is interesting.
The Basilica of San Francesco rises on a hill a little away from the rest of the city. It began to be built in 1228, the day after the canonization of St. Francis. The basilica is on two levels. The relics of the saint are kept in the crypt under the lower level. In addition to them, the main treasure of the basilica are the frescoes of the XIII-XIV centuries. Millions of pilgrims come to this place from all over the world.