Landscape of Sendai Castle and the city in 1868, the first year of the Meiji Period (Sendai City Museum) In 1600, Date Masamune relocated his castle to Sendai, which was located in the center of the Sendai Plains, near the sea, and easily accessible. From then on, the city has prospered as the castle town of the 620,000 koku (rice unit) Sendai Clan. You can see the cityÕs orderly town plan and many people walking through the streets.