SPA, or SPAA, a market-town and watering-place of Belgium, in a wild rugged country, in the province and 16 miles south of Liege. It is well built, and consists almost
altogether of inns and lodging-houses. The town derives its chief importance from its medicinal water, which is more impregnated with iron than that of any other spring known. This water is not only much used on the spot, but exported in considerable quantities. Over the principal spring is built a pump-room; and in the vicinity is the Redoute, an edifice containing a coffee-house, theatre, ball-room, and gambling-rooms. The town has also several churches, a town-hall, hospital, and barracks. Some manufactures are carried on, especially of linen and cotton cloth, leather, snuff-boxes, &c. Pop. 3969.