During the Edo Period (1600-1868), Nagoya served as the seat of the Owari, one of the three major branches of the ruling Tokugawa family. The family amassed great wealth that was only surpassed by four of the 200 feudal domains of the Edo Period. The Tokugawa Art Museum (徳川美術館, Tokugawa Bijutsukan) was built on the grounds of the Owari's former feudal residence and preserves and exhibits several of their treasures including samurai armour and swords, tea utensils, noh masks and costumes, poems, scrolls and maps. https://www.japan-guide.com/e/e3303.html