The municipality of the Appearance of the Alcor occupies a quite central position in the province of Seville, belonging to the region of the Countryside. In 1.996 it counted on a population of 15,886 inhabitants.
The first settlers of these earth were celtas, that founded a population that the historians relate to the turdetana Basilippo. The Romans baptize it like Visus (viewpoint, watchtower), by splendid the panoramic one that he provides. After the Muslim dominion, in which the locality denominates Al-cor (that means the same), Fernando III Santo and the Military order of Calatrava conquer it in the middle of century XIII. The Christians unite the topónimos Latin and Arab, giving their present denomination him. In the middle of century XV one becomes independent from the jurisdiction of Carmona and acquires the title of Villa under señorío of Counts de Castellar.
The urban nucleus is located on the escarpment of the Alcor, with two platforms outposts towards the same one, one to the south and another one to the northeast, and in the center a lowest part of valley by which runs the stream of the Culvert like natural channel of evacuation.
This establishment never has been fortified, always depending on the fortress of Carmona. Its origin would be in an agricultural operation (a Roman villa or a Muslim farmhouse), although its conformation as urban nucleus does not arrive until century XV. The center would be then the church of Santa Maria of the Alcor, along with the City council and the palace of the Counts. In century XVII a true constructive height takes place, being its basic axes the streets Claudius Leon, Real and Rosary, around the Seat of Espínola Cardinal. Throughout century XVIII, the urban development continues by the way of Carmona, present street Track. In the middle of the XIX it is possible to be distinguished between an old zone and narrows (the one of the palace and the church) and more modern and extensive other formed by great apples, having like fundamental axes the streets Rosary and Track.
In century XX, the population increase has caused a great urbanizing effort, canalized throughout the highway Alcala de Guadaira-Carmona. The urban plot has arrived by the southwest until the limit of the municipal term of Mairena of the Alcor. Towards Carmona a growth of residential type has taken place, together with the urban helmet in first half of century and with dispersed urbanizations of unifamiliares houses in the last years. Another direction of growth has been the northwest, following the ways of the cemetery and Tocina, like prolongation of both more important transverse axes, the streets Manuel Jiménez Leon and the Palm.
At the present time, the Appearance forms in its continuous suroccidental end an urban one with Mairena. It presents/displays a linear morphology initially, throughout the wagon mentioned one, modifying later. The apples of the old part present/display extended forms and traditional tipologías in parallel to the mentioned one communication channel, whereas the later developments adopt the new urban forms, of open apples and blocks in height. The Southeastern end of the locality, oriented to the Sevillian Countryside, is by where less the construction has extended, due to its worse topographical conditionses.
Between its constructions of artistic historical interest they emphasize the Parochial Church of Santa Maria of the Alcor (to mudéjar), the church of the Favor or the Corpus Christi (finalized in century XVII) and the rest of the Palace of Castellar.
