Kalocsa, one of the oldest towns in Hungary, in Bács-Kiskun county, is situated in a marshy but highly productive district, near the left bank of the Danube River. Historically it had greater political and economic importance than at present. It is the Episcopal see of one of the four Catholic archbishops of Hungary. Amongst its buildings are a fine cathedral, the archiepiscopal palace, an astronomical observatory, a seminary for priests, and colleges for training teachers. The residents of Kalocsa and its wide-spreading communal lands are chiefly employed in the cultivation of paprika, fruit, flax, hemp and cereals, in the capture of waterfowl and in fishing.