It is a "Gogatsu-ningyo" of the Children's Day displayed in the entrance hall. A "Gogatsu-ningyo" is composed of an armor, a helmet and other accessories.
May 5th was originally called "Tango no Sekku", or Boy's Festival. And people celebrated the healthy growth of boys. Now, this was changed to Children's Day.
Girl's Festival called "Momo no Sekku" is held on March 3rd. Please read an article of March 12nd, 2018.
