His reign is extremely significant for the modern understanding of [[Egyptian religion]] and the Pharaonic ideal of [[Divine Kingship]]. It was under Unas that the [[Pyramid Texts]]—the oldest of the Egyptian funerary texts—are first recorded, inscribed in the walls of the inner chambers in the King's pyramid.
Despite having a long reign, Unas opted for the smallest pyramid design of the Old Kingdom, charmingly named "Beautiful are the Places of Unas". Despite it's its modest dimensions, the complex itself was built to an extremely high quality, with a 700m long [[causeway]] decorated with detailed scenes, many of which have been removed to museums overseas.
These scenes are an innovation in depiction of events in the Old Kingdom: scenes of a famine, the transport of columns, trade with Asiatics, and the first depictions of a captive [[bear]] in Egypt as an exotic pet, shown with collar and a leash. The causeway itself is one of the best preserved in Egypt. While his pyramid still retains some of the fine limestone casing (particularly on the western and southern faces) on which inscriptions added in sunk relief by [[Ramesses II]] can be seen.