Pistoia (USpɪˈstɔɪə,_piːˈstoʊjɑː, pisˈtoːja) is a city and comune in the Italian region of Tuscany, the capital of a province of the same name, located about west and north of Florence and is crossed by the Ombrone Pistoiese, a tributary of the River Arno. It is a typical Italian medieval city, and it attracts many tourists, especially in the summer. The city is famous throughout Europe for its plant nurseries. Timeline of Pistoia Pistoria (in Latin other possible forms are Pistorium or Pistoriae) was a centre of Gallic, Ligurian and Etruscan settlements before becoming a Roman colony in the 6th century BC, along the important road Via Cassia: in 62 BC the demagogue Catiline and his fellow conspirators were slain nearby. From the 5th century the city was a bishopric, and during the Lombardic kingdom it was a royal city and had several privileges. Pistoia's most splendid age began in 1177 when it proclaimed itself a free commune: in the following years it became an important political centre, erecting walls and several public and religious buildings. In 1254 the Ghibelline town of Pistoia was conquered by the Guelph Florence; this did not pacify the town, but led to marked civil violence between "Black" and "White" Guelph factions, pitting different noble families against one another. In the Inferno of Dante, we encounter a particularly violent member of the Black faction of Pistoia, Vanni Fucci, tangled up in a knot of snakes while cursing God, who states: (I am a) beast and Pistoia my worthy lair. Pistoia remained a Florentine holding except for a brief period in the 14th century, when a former abbott, Ormanno Tedici, became Lord of the city. This did not last long, since his nephew Filippo sold the town to Castruccio Castracani of Lucca. The town was officially annexed to Florence in 1530. One of the most famous families of the city was that of the Rospigliosi, owners of agricultural estates and wool merchants; the Rospigliosi provided a pope in 1667 with Giulio Rospigliosi, who briefly reigned as Clement IX (1667–69), and gave several cardinals to the church.