The vast lake within this lovely, verdant 530-hectare park – backing onto the towering city wall – is studded with five interconnected isles, scattered with bonsai gardens, camphor and cherry-blossom trees, temples and bamboo groves. The entire lake circuit is a whopping 9.5km jaunt. Alternatively, there are boat rides (¥70 per hour), pedalos (¥60 to ¥100 per hour) and buggy rides (¥12).