The church of SS Sebastian y Prisca in Taxco is attributed to Diego Duran Berruecos. Built between 1748 and 1758 at the expense of the silver magnate Jose de la Borda (1700-1778), it represents an early provincial manifestation of the Ultra Baroque (Kubler). The pink stone church dominates the town, which is itself elevated above the Mexico-Acapulco road. This effect is further emphasized by the verticality of the design, which derives from the use of a double square system of proportions, in which the height of the tower is twice the overall width of the facade, and the height of the facade panel is twice its own width. The tower shafts are plain to the height of the nave eaves, save for their circular windows, but above this the belfries are thickly adorned with columns and estipites. Paired columns on the main facade are straight at ground-level but twisted at the upper range. The high dome is decorated with polychrome glazed tiles.