The Taiyuu Mausoleum is the lavish mausoleum of the third Tokugawa Shogun, Tokugawa Iemitsu, built by his son Ietsuna in 1653. Its architecture and layout resembles that of Toushou Shrine, and features both Buddhist and Shinto structures, though built on a more modest scale than Toushou Shrine out of Iemitsu's respect for his grandfather Tokugawa Ieyasu.