Children's day in Japan.

"Hinamatsuri (Doll's Festival)" is held on March 3rd. This is a day to pray for young girl's growth and happiness. It is also called "Momo no sekku (Peach Festival)" because of the peach blossom season on the old lunar calendar. May 5th is "Kodomo no hi (Children's Day)," and this is so called "Boy's Festival." While Children's Day is a national holiday, Hinamatsuri is not.

Most families with girls display "hina-ningyo" (special dolls for Hinamatsuri, see the photo below) and dedicate peach blossoms to them. They are usually arranged on a five or seven-tiered stand covered with a red carpet. At the top are the Emperor and Empress. The next step contains three court ladies (sannin-kanjo), followed by five musicians (gonin-bayashi), two ministers (udaijin and sadaijin), and three servants ending the bottom row in a five-tiered display. There are also small pieces of furniture, small meal dishes, and other things. (from: http://japanese.about.com/library/weekly/aa022501a.htm)

Kodomo-no-hi 
Originally known as boy's day, it is now a celebration of all children. Much like Girl's Day (Hinamatsuri), dolls for boys are put on display in homes. The dolls are patterned after warriors and heroes. Carp are another symbol of Children's Day. They represent strength (known to swim up waterfalls), and success in life. An ancient practice of bathing with flag plant leaves is also observed on this day; it is said to have medicinal values. It is also important on this day to make offerings of Japanese confections: rice dumplings wrapped in bamboo leaves and rice cakes wrapped in oak leaves. (http://japanese.about.com/library/weekly/aa050297.htm)