The Zócalo is a park and plaza in the historic center of Puebla, a city in the Mexican state of Puebla. The Zócalo, or main square, remains the cultural, political and religious center of the city. It was the first block to be laid out, with the rest of the historic center traced out from it in the form of a checkerboard. This main plaza originally was rectangular, but later made square because the earlier version was considered to be ugly. Until the end of the 18th century, this was the main market for the town. For much of the colonial period, it was the main source of potable water via a fountain that had been installed in the center in the mid-16th century. Many political and cultural events have been and continue to be held here. Bullfights were held in the main square from 1566 to 17