To the east of Piedmont is found the vineyards of Lombardy. Before the days of irrigation, viticulture was largely practised in this region. Vines do not take kindly to irrigation and for this reason Lombardy is not so prominent in wine productions as formerly. Nearly all the product of Lombardy consists of light red table wines and have marked tannic and acid qualities. These wines have long been used in Switzerland where they are much liked. The principal market of Lombardy wines is at Milan.