The National Museum of Iran is the combination of two museums, the Ancient Museum of Iran (inaugurated in 1937), and the National Arts Museum (inaugurated in 1972).First Building consists of three halls. The three halls contain artifacts from the lower, middle, and upper Paleolithic, as well as the Neolithic, Chalcolithic, early and late Bronze Age, and Iron Ages I-III, through the Median, Achaemenid, Seleucid, Parthian, and Sassanid periods.The oldest artifact in the museum are from Kashafrud, Darband and Ganj Par, sites that date back to the Lower Paleolithic period. Mousterian stone tools made by Neanderthals are also on display in the first hall. The most important Upper Paleolithic tools are from the Yafteh Cave, dating back approximately 30,000-35,000 years. There are also 9,000 year old human and animal figurines from Teppe Sarab in Kermanshah Province among the many other ancient artifacts.The post-Islamic part of the museum was inaugurated in 1996 and consists of three floors. It contains various pieces of pottery, textiles, texts, artworks, astrolabes, and adobe calligraphy from Iran's 1,400-year Islamic history.