city, capital of tarn département, Midi-Pyrénées région, in the Languedoc, southern France. It lies along the Tarn River where the latter leaves the Massif Central for the Garonne Plain, northeast of Toulouse. Albi, or Albiga, was the capital of the Gallo-Roman Albigenses and later of the viscounty of Albigeois, which was a fief of the counts of Toulouse. An active centre of Catharism, the town gave its name to the Albigensian heresy, which led to the Albigensian Crusade (1209) and later to the development of the Inquisition. The city was captured in 1215, and the bishops subsequently lost their estates to the crown. By a convention (1264), temporal power was granted to the bishops (archbishops after 1678) until the French Revolution.

The town's most important architectural glory is the Gothic Sainte-Cécile Cathedral (1277–1512), which was constructed in brick, without flying buttresses. Between the cathedral and the river is situated the red brick Berbie Palace, a 13th-century archbishop's palace that is now a museum where the works of Henri de Toulouse-Lautrec, a native of Albi, are displayed. Below the palace is the 9th-century Old Bridge. The centre of the town is medieval. The Church of Saint-Salvi has a splendid cloister (11th–15th century). Albi serves as a base for exploration of the Tarn River gorges and has a tourist industry. The town also manufactures cement, dyes, flour, synthetic textiles, and glass. Pop. (1999) 46,274; (2005 est.) 48,100.