Monleon Castle lies, in the village by the same name, in the province of Salamanca in Spain.
Located at the western end of the village, next to a steep area that dominates the confluence of the Carnicero stream with the Alagón river, this is another stately castle raised in the 15 century, which is part of the defensive walls that surround the village.
Its groundplan is an irregular trapeze, with the keep in the middle. The north and east wall of the enclosure are built later than the others, to obtain a fortified perimeter that defended the tower from inside the village. The square keep is made up of large granite blocks reinforced with ashlar masonry at its corners. The top is fitted with 8 turrets. In medieval times the keep could be accessed on the second floorlevel by means of a removable stair or drawbridge. Its interior was fitted with 5 floors.