 Although the Burmese temple designs evolved from Indic, Pyu (and possibly Mon) styles, the techniques of vaulting seem to have developed in Pagan itself.The earliest vaulted temples in Pagan date to the 11th century while the vaulting did not become widespread in India until the late 12th century.The masonry of the buildings shows "an astonishing degree of perfection", where many of the immense structures survived the 1975 earthquake more or less intact.