XVIII Century
1704 The construction of the 2-meter-thick wall was finished. Built in the shape of an irregular polygon, two sides of 6 meters in height looked out to sea and six more sides 7.9 meters high, faced inland. Every corner of the polygon was protected by a bastion, each with 16 cannons.
1738 At the beginning of April an official communication was sent by the local government to the Spanish Court to inform them about the changes that had taken place to the entrance ways to the main square as well as the fact that the "Puerta de Tierra" was now officially opened.
1779 One of the first records of "Casa Guerrero" located in the historical city center of Campeche between 18th street and the 59th street can be observed in a detailed city map of Campeche, created in this year by an military engineer called Agustín Cramer. On this map appears the building, which had not been on previous maps in the same year.