Kodomo-no-hi (May 5) – also called tango-no-sekku, is a festival for children and a national holiday.

Families with boys put up koinobori, or carp streamers, in their garden and a display of dolls called gogatsu ningyo in a room of the house.

Gogatsu ningyo: The dolls are usually placed on a stepped dais with three levels. There is a set of samurai armour, a taiko, or big drum, and other things needed to fight an old-style battle.

The described display on the above photo is presently to be seen in the Hall of Tokai University European Center in Vedbæk.