"Every year on March 3rd, Japan celebrates the Doll Festival (Japanese, Hina Matsuri). Until recently, Girls' Day was also celebrated on March 3rd. On this day every year, families set up a special step-altar on which to arrange their Emperor and Empress dolls, called 'hina' in Japanese." This site describes and provides images of these dolls and doll altars. From the Kyoto Museum.