Contemporary with Palenque and Tikal, Uxmal is an architectural gem whose buildings reflect a renaissance of Maya building that took place in the seventh to nine centuries A.D. The architectural style epitomized here is known as Puuc, which means "low hill" in Maya. Puuc blends ornate stone mosaics and cornices with vaulted arches and rows of columns. The archeologist Victor von Hagen called one of Uxmal's buildings, the House of the Governor, the most magnificent edifice ever erected in the Americas. Covering five acres, the palace features a façade frieze consisting of no fewer than 20,000 individually cut stones.