Towering on a stone foundation on a green hillside, the impressive Odawara Castle, with its five stories and three­-tiered roof, presides over a small grove of cherry trees that explode in pinks and whites come spring. Located an hour south of Tokyo and blocks from the sea in Hakone, the castle is perhaps the largest and best ­preserved example of a 15th­-century Japanese fortress in the area.

Behind two large decorative gates— Umadashi­mon and Akagane­mon—the castle complex spans multiple buildings and gardens while including moat­-like pools on two sides of the property. An onsite museum, inside the main castle tower, features artifacts, armor and weapons, as well as details of the castle’s storied history; the top floor affords views of Sagami Bay and the surrounding city. The castle was the built by the Omori Clan before changing hands in a late 16th­ century siege. The Okubo family, appointed to live there, ruled Odawara through nearly the entire Edo period before the castle went out of use in 1870.