The construction of this square began in 1729, by order of Phillip V, with the square primarily intended 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. From the ground it appears to be a perfect quadrangle, but when seen from an aerial photo, the shape is irregular. The baroque façades of the building, which surround and define the square’s perimeter, seem perfectly symmetrical at first glance, but in reality, none of them are the same height. Entire books have been written about this square in Salamanca, and, to this day, it is considered the absolute model of Spanish squares.