The Bullring is distinctive because of the irregular outline of its arena. It is well known that the fact that its construction took 120 years (1761-1881) had an influence on the deformations that are visible today, and on the variety and quality of the building systems used. The stage of construction which took place in the XVIIIth century (1761-1785) can be divided into two distinct phases.
In the first (1761-1766), the construction plan originally envisaged by Francisco Sánchez de Aragón was faithfully implemented. The arc of the ring that he described could be that of a circular bullring of thirty ochavas.
However, in the second phase (1781-1785), the circle began to be deformed when the bullring was constricted to conform to the plot of land available and to adapt the dimensions to the bullfighting on foot that was coming into fashion in that period. So Vicente de San Martín relocated the centre of the circle, and from the new centre described a circle with a shorter radius. The result was the well-known oval shape of its ground plan. Subsequently, in order to adapt to the area of a smaller bullring, he relocated a new intermediate centre, as can be seen on the attached plans.
Selected texts and information:
La Plaza de Toros de Sevilla. Historia de su ininterrumpida construcción. María del Valle Gómez de Terreros. Universidad de Huelva, 1999.
Plaza de Toros de la Real Maestranza de Caballería de Sevilla: Obras 2005-2011. J.A. Carbajal y VV. AA. Real Maestranza de Caballería, 2011.