Prior to 18th century
| History of Italy |
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 Italyportal |
- 4th century BCE – Etruscans build wall around Arretium. [1]
- 294 BCE – Arretium attacked by Gallic forces. [1]
- 1st century BCE – Roman amphitheatre of Arezzo built. [2]
- 49 BCE – Arretium occupied by forces of Caesar. [3]
- 337 CE – Roman Catholic Diocese of Arezzo established (approximate date). [4]
- 1026 CE – Guido of Arezzo writes musical treatise Micrologus (approximate date).
- 1032 – Cathedral consecrated. [2]
- 1111 – Arezzo sacked by forces of Henry V, Holy Roman Emperor. [5]
- 13th century – Santa Maria della Pieve church remodelled.
- 1215 – University of Arezzo founded.
- 1248 – Guglielmino Ubertini becomes bishop. [5]
- 1262 – Fraternita dei Laici founded. [2]
- 1278 – Arezzo Cathedral construction begins.
- 1288 – Battle of Pieve al Toppo fought in Siena; Aretine forces win.
- 1289 – Battle of Campaldino fought near town; Florentines win. [6]
- 1290 – Basilica of San Francesco, Arezzo, start of construction of church of St. Francis inside the city walls
- 1304 – Future poet Petrarch born in Arezzo. [5]
- 1312 – Guido Tarlati becomes bishop. [5]
- 1320 – Town wall built. [6]
- 1375
- Chiesa di San Bernardo (Arezzo) (church) built.
- Palazzo della Fraternita dei Laici construction begins.
- 1384 – Enguerrand VII, Lord of Coucy sells Arezzo to Florentines; town becomes part of the Republic of Florence (until 1859). [5] [1]
- 1409 – Rebellion against Florentine rule. [1]
- 1444 – Santa Maria delle Grazie church built. [2]
- 1466 – Piero della Francesca paints Storie della Vera Croce in the Basilica of San Francesco, Arezzo. [2]
- 1511 – Future artist Giorgio Vasari born in Arezzo. [7]
- 1529 – Rebellion against Florentine rule. [1]
- 1560 – Fortezza Medicea (Arezzo) (fortification) built (approximate date). [7]
