Postclassical and modern Mandaic use many Persian words. The structure is one of the last examples of civil architecture from the late Postclassical. Apollo has often featured in postclassical art and literature. This structure is certainly the best preserved Temple of late postclassical Mesoamerica. In 1979, a research project was developed to bring better understanding of the Postclassical Maya. The white unicorn was a common subject of Postclassical history manuscripts, paintings and tapestries. It has been confirmed that the site was not occupied during the postclassical period. The constructions, from the postclassical period, were built between 1350 and 1450 CE. The PostClassical Ensemble is a classical music musical ensemble from Washington, D.C.. The word comes from postclassical Latin "sollemnitas", meaning a solemnity, festival, celebration of a day.