|Boy's Day - Koinobori |
near Misawa, Japan
On May 5th, typically Boys' Day, families raise the carp-shaped koinobori flags (carp because of the Chinese legend that a carp that swims upstream becomes a dragon, and the way the flags blow in the wind looks like they are swimming), with one black carp for the father, one red carp for the mother, and one blue carp for each child (traditionally each son). Wikipedia
Girls' Day is in March, and to celebrate, families display all manner of dolls in their homes, many passed down from generation to generation.