ESTREMADURA, conterminous on the west with Portugal and on the south with Huelva, is the wildest and least peopled of all the provinces of Spain, and has been almost sufficiently described in a former chapter. It is divided into the two modern provinces of _Badajoz_ and _Caceres_, through which run respectively the two rivers, the Guadiana and the Tagus. Desolate as it is now, the numerous Roman remains at Merida (6000) and Trajan's mighty bridge at Alcantara tell what it was in Roman times; but in Moorish days it suffered more from war than any other province, and the curse, the "_mesta_," the only means the Christian conquerors had of utilizing their vast and thinly-peopled properties, has ever since rested upon it. Besides its flocks and herds its chief wealth consists in acorns and bark for tanning, and cork for other purposes. The rivers run in deep gorges, almost canons, and are useless for either navigation or for irrigation. Badajoz (22,000), on the Guadiana, one of the frontier fortresses of Spain towards Portugal, is by far the largest city. Higher up the river are Merida and Medellin, but Don Benito (15,000) is of greater commercial importance than either. _Caceres_, a province still more thinly peopled than Badajoz, having only fifteen inhabitants instead of nineteen to the square kilometre, has 12,000 for its chief town; Plasencia, on the Xerte, an affluent of the Alagon, has only half that number. In the north-east of this province, on the southern spurs of the lofty Sierra de Gredos, stands the monastery San Juste, to which the Emperor Charles V. retired on his resignation of his many crowns. The shepherds of Estremadura, notwithstanding the scanty population, gave numbers of emigrants to the New World; Cortez and Pizarro were swineherds, the one of Medellin, the other of Truxillo. The town of Alcantara gives its name to one of the three great military orders of Spain.