Cahors is the capital of the Lot department in south-western France.Its site is dramatic, being contained on three sides within a U-shaped bend in the River Lot known as the presqu'île ("peninsula"). Today Cahors is perhaps best known as the centre of the famous AOC 'black' wine known since the Middle Ages and exported via Bordeaux, long before that region had developed its own viniculture industry.HistoryCahors has had a rich history since Celtic times. The original name of the town was Divona or Divona Cadurcorum, "Divona of the Cadurci," Divona was a fountain, now called "la fontaine des Chartreux", worshiped by the Cadurci, a Celtic people of Gaul before the Roman conquest in the 50s BC. The Cadurci were among the last Celtic tribes to resist the Roman invasion. Cahors derives from Cadurcorum. However, romanization was rapid and profound : Cahors became a large Roman city, with many monuments whose remnants can be seen today. It has declined economically since the Middle Ages, and lost its university in the 18th century. Today it is a popular tourist centre with people coming to enjoy its mediaeval quarter and the 14th-century fortified Valentré bridge. It is the seat of the Diocese of Cahors.It was also infamous at that time for having bankers that charged interest on their loans. The church in these times said that using money as an end in itself (usury) was a sin. Because of this Cahors became synonymous with this sin, and was mentioned in Dante's Inferno (XI.50) alongside Sodom as wicked.