Peruvian Architecture Although the buildings of Peru were erected probably about the 12th century A.D., they possess an extraordinary likeness to those of the Pelasgi in Europe. This resemblance in style must be accidental, arising probably from the circumstance that both nations used bronze tools, and were unacquainted with iron. The Peruvian walls are built with large polygonal blocks of stone, exactly like what we call "cyclopean masonry." The jambs of the doorways slope inwards, like those of Etruscan tombs, and have similar lintels. The walls of Cuzco are good examples of this style. It is further remarkable that these walls are built with re-entering angles, like the fortifications which were adopted in Europe only after the invention of gunpowder. SEE PERU.