This is the site of the mansion where Prince Yoshinobu Tokugawa spent more than 20 years after his return to power. It is now operated as a ryotei (Japanese style restaurant). Why don't you take a stroll through the garden while having lunch here? The garden, which was created by the gardener Jihei Ogawa, changes with the seasons, and each season has its own unique atmosphere. In spring, the cherry blossoms in full bloom are a sight to behold. At night, the garden is lit up to create an ethereal atmosphere!