In the Imperial Palace, this building is
biggest building and is 162m in length.
The general public's congratulatory visit to the Imperial Palace
is performed in the balcony of this building,
and the front yard(East Plaza) twice a year.
This building is used for receptions, evening parties, waiting rooms, etc.,
and is constituted "Minami-damari(South Lobby)" , "Nami-no-Ma(Hall of Waves)",
"Matsukaze-no-Ma(Hall of Wind In Pine)",
"Shunju-no-Ma(Hall of Spring and Autumn)","Shakkyo-no-Ma(Hall of Lion Dance)",
"Kita-no-Ma(Hall of Winter"and"Kita-damari(North lobby)"