emuseum -- National Treasures and Important Cultural Properties of the Tokyo National Museummages and texts include Japanese paintings from the 11th-13th centuries and 15th-19th centuries, Chinese paintings from the Song and Yuan dynasties, Buddhist sutras and Chinese classics, swords, historical and classical Japanese documents, calligraphy, and textiles.
To use this website, run mouse over images to read pop-up menu that explains contents. "Tsukaikata" button at bottom right of homepage will take you to a page with website navigation directions. Includes Japanese, Chinese, Korean, and French descriptions, in addition to English.