Oedo Antique Flea Market – Since 2003 The Oedo Antique Flea Market (大江戸骨董市), which started in September 2003 to celebrate 400 years since the beginning of the Tokugawa shogunate, or the Tokugawa bakufu and the Edo bakufu, is the biggest open-air antiques market in Japan. Held at Tokyo International Forum, which is next to Yurakucho Station