Puebla's cathedral, dedicated to the Immaculate Conception, is a treasure of colonial art. Designed by Francisco Becerra, the first stage of construction took place between 1575 and 1618. The initial plans included four corner towers like the cathedral of Valladolid, Spain. The bases of the towers were built and stand as testimony to the lofty plans. The second phase of construction was under the direction of Bishop Juan de Palafox y Mendoza who consecrated the cathedral on April 18, 1649. The main facade, in the sober mannerist style, is made of dark grey quarrystone and was completed in 1664. gomexico.about.com/od/colonialcities/ss/puebla_walking_2.htm DSCN9018