Outline of each wing and building in the Imperial Palace

Omote-gozasyo

This is where His Majesty the Emperor performs his official public duties. This wing also has waiting rooms for Palace staff.

Seiden State Hall (Main Building)

Seiden-Matsu-no-Ma (State Room)
This is the state room used for main ceremonies including: New Year reception, the presentation of credentials, Imperial investitures, the appointment of official with Imperial Attestation, Imperial Conferment of Decoration, and the Kousho Hajime (Imperial New Year's Lectures) and the Utakai Hajime (Imperial New Year's Poetry Reading).
Seiden-Take-no-Ma (Audience Room)
This is used for other ceremonies and events, such as audiences granted by Their Majesties the Emperor and Empress.
Seiden-Ume-no-Ma (Audience Room)
This is used for other ceremonies and events, such as celebrations of the birthday of Her Majesty the Empress, and audiences granted by Her Majesty.

Chigusa-no-Ma, Chidori-no-Ma (Drawing Rooms)

This can be used by visitors to the Imperial Palace, as a place to enjoy a brief rest during their visit.

Homeiden State Banquet Hall

Homeiden
This is used for various banquets held in the Imperial Palace, such as State Banquets for State Guests, the Emperor's Birthday Luncheon, and other banquets for a large number of guests.
Izumi-no-Ma
This is used as a resting place for a small number of people.

Rensui (Dining Room)

This is used for functions held for a small number of guests, such as luncheons and banquets. (In the center of the room is a moveable partition that allows it to be divided into the north section (Rensui-kita) and south section (Rensui-minami).)

Chowaden (Reception Hall)

Shunju-no-Ma (Grand Hall)
This is a multi-purpose room used for receptions, audiences granted by Their Majesties the Emperor and Empress and other functions.
Matsukaze-no-Ma (Drawing Room)
This can be used by visitors to the Imperial Palace, as place to enjoy a brief rest during their visit.
Shakkyo-no-Ma (Drawing Room)
This can be used by visitors to the Imperial Palace, as place to enjoy a brief rest during their visit.
Nami-no-Ma (Lobby)
This can be used by visitors to the Imperial Palace, as place to enjoy a brief rest during their visit.
Kita-no-Ma (Lobby)
This can be used by visitors to the Imperial Palace, as place to enjoy a brief rest during their visit.
Minami-Damari (South Entrance Hall), Kita-Damari (North Entrance Hall)
This is a covered entranceway, which can also be used as a resting place. The Kita-Damari is also used for audiences granted by Their Majesties the Emperor and Empress and has a place for keeping a register book.

Imperial Garden (Center Garden, East Garden, South Garden)

The East Garden is used for public celebrations, such as the New Year and the Emperor's Birthday. Beneath the garden is a car park that can accommodate up to 120 large-size vehicles.

The Nakamon-Gate, Matsu-no-Tou and the lanterns hanging underneath the Chowaden were made from contributions by the people during the construction of the Palace.