Honmaru Goten was once the residences and offices of the closest allies to the Tokugawa Shogunate. The name of the place can be translated to “the palace in the inner- most circle of defense.” It is the only surviving structure of the former Kawagoe Castle. Tokugawa Ieyasu installed an important loyal ally to be the lord of the castle. This is because of the strategic and commerce importance of Kawagoe to Edo (present day Tokyo). During the Edo Period (1603-1867) 21 ruling lords, who were closely allied with the Tokugawa Shogunate, lived at Kawagoe Castle. The Honmaru Goten was added in 1848 and was renovated in 2011. It features spacious tatami rooms, a garden, and pictures on display. There are also three models of a feudal lord with his vassals where you can sit with them.