The Yūshūkan (遊就館) is a Japanese military and war museum located within Yasukuni Shrine in Chiyoda, Tokyo. As a museum maintained by the shrine, which is dedicated to the souls of soldiers who died fighting on behalf of the Emperor of Japan, the museum contains various artifacts and documents concerning Japanese war casualties and military activity from the start of the Meiji Restoration to the end of the Pacific War. The museum was established in 1882, and describes itself as the first and oldest war and military museum in Japan.
The museum has been accused of containing revisionism in its accounts of Japan's actions in World War II, as well as glorifying Japan's aggressive militaristic past. See Controversies surrounding Yasukuni Shrine for the full discussion of these controversies.