Now picture what the storehouse held. The collection includes paintings, calligraphy, metalwork, lacquerware, woodwork, swords, ceramics, glassware, musical instruments and masks. There are also historical items connected with the eye-opening ceremony of the Great Buddha at Todaiji, ancient medicines, and the Shosoin documents, which are a precious record for understanding daily life and administration in Nara-period Japan. Altogether, the collection is often described as numbering about 9,000 items. Here is a surprise. More than 90 percent of the treasures were made in Japan, many of them using exotic designs. Yet the collection also includes imports from Tang China, from the Western Regions and from Persia. That mix is why the treasury is called the eastern terminus of the Silk Road. One celebrated piece is a five-string biwa, a lute-like instrument, made of rosewood and inlaid with mother-of-pearl. So this humble-looking storehouse is really a window on a cosmopolitan world. In the eighth century, the capital at Nara was linked by culture and trade to distant lands, and the objects kept here are proof of it.