Precisely, destined to the cloister of said convent, Mr. Gonzalo Messía Carrillo Fonseca, I Marqués de La Guardia, commissioned the execution of a free-standing fountain, crowned by the Magdalena and dated 1577, which has been attributed to Francisco del Castillo "El Mozo" , currently located in the courtyard of the Excma. Provincial Council of Jaén. Years before, and perhaps to commemorate the appointment as 1st Marquis of La Guardia, Mr. Gonzalo Messía ordered the erection of a pillar-watering hole at the entrance of the town, near the Dominican convent, to serve as a water supply to the neighbors and their residents. animals. That beautiful space, enlivened with splendid gardens, over time was transformed into a small square made up of the fountain itself and a noble mansion of ashlar masonry built according to the date carved in it in 1814.

The pillar-drinking trough, with a horizontal layout and built in ashlar stone, is formed by a wall articulated by two bodies and an attic. In the first body there are five bronze pipes projecting from vented niches that pour abundant water into a rectangular pillar, in the second a beautiful parchment poster with hanging cloths was carved with the inscription alluding to the client and the date of execution: "This work I command to do the last. Don Gonzalo Mexia Carrillo my lord. Year 1566 ”. Along this second body runs an entablature supported at the ends by Ionic fluted columns. In the center of the attic, two dogs, with the garruchas of the Messia family, hold an oval shield on parchment moldings with the marquis crown and the following inscription "Plaza de Isabel II Reina Constitucional", the name by which he is known place since then. Originally, the dogs held the shield with the arms of Don Gonzalo Messía Carrillo; It is finished off with a pediment with a central relief flanked by fins and crowned with a Cross, at the ends and carrying the cross of Santiago, two reclining lions have settled (all very redone).

Although documentary evidence does not know the tracist of this beautiful pillar, the styles incorporated in it, columns with alternating canes, the parchment poster with cloths (similar to those carved in the City Hall of Úbeda), the molding of the entablature and the trimmed leathers of the shield held by the dogs point to a possible intervention by Andrés de Vandelvira. Professor Galera Andreu expresses himself in this regard: “I don't think the public fountain is alien to his hand either, despite the reforms (...) to be highlighted by the landscape of the cloth, the reduced scale of the attached columns in an application in reverse of what was done in the Benavides chapel in Baeza. The complex was restored by the local Workshop School in 1991.