Had the dynasty not been overthrown in 1868, the man who might be shogun today is Tsunenari Tokugawa, 50, current head of the family.
It was laid out during the early years of the Tokugawa era as a formal strolling garden, with pathways around landscaped lakes, mountains, waterfalls, rivers and temples.
Japan's isolation lasted 268 years, and the family dynasty he founded deified Tokugawa after his death to help legitimize itself.