Our story starts in 1620, the early Edo period. Asano Nagaakira, the first lord of the Hiroshima domain, had entered Hiroshima Castle the year before. Right away he began building a villa garden, which was first known as Osensui, the pond garden, or as Sentei, the Spring Residence. Powerful lords of this era liked to lay out grand gardens near their castles, often with tea houses, and this was Nagaakira's. The man who designed it was Ueda Soko, a senior retainer of the Asano house who was also famous as a tea master. A tea master's eye explains a lot about the garden. It is not a single grand view but a sequence of carefully framed scenes, linked by a path you follow around the grounds. At the heart of it is a pond called Takueichi. Dug there are more than 10 islands, large and small, and hills rise around the water. Valleys, bridges, tea houses and pavilions are slotted in with great skill. Later lords kept adding to the garden, and it came to look roughly as it does today.