Shiroishi Castle used to be ruled by the chief vassal to Date Masamune, who is credited with founding Sendai. The castle was dismantled in 1874 and partially restored in 1995 using the original architectural techniques. Around 400 sakura including somei yoshino, shidarezakura, and double-blossom yaezakura are planted on the castle grounds. From certain angles, the castle looks as if it is floating in a sea of pink blossoms. Special nighttime illuminations are another unforgettable sight.