The construction of the square begins in 1729, by order of Phillip V, with the square being meant primarily for bull fights. Today, it is seen as one of the most beautiful squares in Spain and in the whole of Europe. The space offers a paradoxical optical illusion. It seems a perfect quadrangle, although, as seen from an aerial photo, the shape is irregular. The baroque façades of the building, which surrounds and defines the square perimeter, seem perfectly symmetrical on a first glance, but, in reality, not one of them has the same height. Entire books have been written about the square in Salamanca, and, to this day, it is considered the absolute model of Spanish squares.