Assisi is a town and comune of Italy in the Province of Perugia in the Umbria region, on the western flank of Monte Subasio.

It is generally regarded as the birthplace of the Latin poet Propertius, born around 50-45 BC. It is the birthplace of St. Francis, who founded the Franciscan religious order in the town in 1208, and St. Clare (Chiara d'Offreducci), the founder of the Poor Sisters, which later became the Order of Poor Clares after her death. The 19th-century Saint Gabriel of Our Lady of Sorrows was also born in Assisi.

Main sights include:

• Basilica of San Francesco d'Assisi (St. Francis): The Franciscan monastery, il Sacro Convento, and the lower and upper church (Italian: Basilica inferiore and Basilica superiore) of St Francis were begun immediately after his canonization in 1228, and completed in 1253. The lower church has frescoes by the late-medieval artists Cimabue and Giotto; the upper church houses frescoes of scenes in the life of St. Francis previously ascribed to Giotto, but now thought to be by artists of the circle of Pietro Cavallini from Rome. The Basilica was badly damaged by a 5.5 earthquake on 26 September 1997, during which part of the vault collapsed, killing four people inside the church and carrying with it a fresco by Cimabue. The edifice was closed for two years for restoration.
• Santa Maria Maggiore (St. Mary the Greater): earliest extant church in Assisi.
• Cathedral of San Rufino (St. Rufinus): church with a Romanesque façade with three rose windows and a 16th-century interior; part of it is built on a Roman cistern.
• Basilica of Santa Chiara (St. Clare): church, begun in 1257, with its massive lateral buttresses, rose window, and simple Gothic interior; and 13th-century frescoes and paintings. It contains the tomb of the namesake saint.
• Basilica of Santa Maria degli Angeli (St. Mary of the Angels); church which houses the Porziuncola.
• Chiesa Nuova: church built over the presumed parental home of St. Francis
• Santo Stefano: one of the oldest churches of Assisi.
• Eremo delle Carceri: a small monastery with church at a canyon above the town, where St. Francis retreated and preached to birds
• Church of San Pietro (St. Peter): monastery built by the Benedictines in the 10th century and rebuilt in the 13th century. It has a rectangular façade with three rose windows; the Gothic chapel of the Holy Sacrament houses a triptych by Matteo di Gualdo.
• Church of San Damiano is where Saint Clare and the Poor Clares lived and is the location of Saint Francis' conversion.
• The town is dominated by two medieval castles. The larger, called Rocca Maggiore, is a massive reconstruction by Cardinal Albornoz (1366) and expanded by popes Pius II (polygonal tower, 1458) and Paul III (the cylindrical bastion near the entrance, 1535-1538). The smaller of the two was built in Roman era: it has been only partially reserved, a small portion and three towers being open to the public.
• the Roman amphitheater, built in the early 1st century AD. Its elliptical plan is identifiable from the medieval houses built around it, and from an arch of travertine cunei. The arena now houses a garden.
• the Piazza del Comune ("Communal Square"), with the Palazzo del Capitano del Popolo (mid-13th century, featuring a series of merlons added in 1927), the adjoining Torre del Popolo ("People's Tower", 1305) the Palazzo dei Priori ("Palace of the Priors", 12751493). The fountains with three lions in the southern side dates from the 16th century.
• The Temple of Minerva, also facing the Piazza del Comune
• The abbey of St. Benedict, founded in the 10th century on the Monte Subasio. Remains include the crypt (late 11th century), the apse and the external walls.