Overview (history, characteristics, attractions)
The National Diet Building is the central facility of Japan's legislative branch, located in Nagatacho, Chiyoda Ward, Tokyo. Its official name is "Kokkīgijido." The current building was constructed from the end of the Taisho period to the early Showa period, and was completed in 1936 (Showa 11). It features a stately stone exterior and a central tower (approximately 65m), and the interior design, including the entrance hall and main conference hall, also harmonizes Western-style architecture of the time with Japanese elements.
Historically, it has been an important political stage, and its charm lies in its architectural beauty, stately atmosphere, and the opportunity to experience the political scene up close. As it is located in the center of the city, it is also enjoyable to stroll around the surrounding government buildings and gardens.
Highlights
- Exterior photography: The central tower and the imposing facade are a great photo spot. It is majestic in the daytime and changes its appearance at night when it is lit up.
- Main Assembly Hall (House of Councillors and House of Representatives): This is where Diet deliberations actually take place. You may be able to tour the interior on public tours (please check availability).
- Main entrance hall and staircase: A stately space decorated with marble, sculptures, and ornaments. Particularly popular with architecture fans.
- Commemorative photo spot: You can take photos with the historical architecture as a background from angles around the building or from the public road.
- Surrounding government offices and scenery: Convenient location for visiting the Prime Minister's Official Residence, National Diet Library, and Imperial Palace Outer Gardens.
Access (nearest station, transportation, etc.)
- Nearest station (walking distance)
- Kokkai-gijidomae Station (Tokyo Metro) - Approximately 1-3 minutes walk
- Nagatacho Station (Tokyo Metro) - Approximately 3-5 minutes walk
- Kasumigaseki Station (Tokyo Metro) - Approximately 7-10 minutes on foot
- Bus/Car: Traffic restrictions and security measures may be in place in the surrounding area. If you are visiting by car, please be aware of parking issues. We recommend using public transportation.
- From the airport: From Narita Airport or Haneda Airport, take the limousine bus or train to central Tokyo. The exact route will vary depending on your departure point.
Estimated stay (estimated time required)
- If you just want to look at the exterior and take photos: About 15 to 30 minutes
- If you join a tour, it takes about an hour (1-1.5 hours including travel and waiting time)
- If you combine the tour with other nearby facilities (National Diet Library, Imperial Palace Outer Gardens, etc.): Half a day to a full day
Nearby spots
- Imperial Palace Outer Garden and Nijubashi Bridge: Historical landscape and vast green space. Within walking distance.
- National Diet Library (Diet Library): Exhibitions, materials viewing, and building tours are available (please check opening times).
- Prime Minister's Official Residence and Kasumigaseki Government District: A spot to view and photograph the official buildings (access to the grounds is restricted).
- Hibiya Park/Hibiya Chanter: Convenient for resting and eating.
- Akasaka/Tameike-sanno area: There are plenty of restaurants and cafes, making it a great place to stroll around.
Things to be aware of (crowds, manners, seasonal precautions, etc.)
- Check before visiting: Internal tours (guided tours) are often free of charge, but the dates, times, and registration methods (whether or not advance registration is required) may change, so be sure to check the official website or information desk in advance.
- Baggage and Identification: During tours, you may be required to show identification and undergo baggage inspection. Large luggage and dangerous items are not permitted.
- Photography restrictions: You are free to take photos of the exterior, but photography may be prohibited or restricted inside (especially around the conference hall). Please follow the directions of signs and staff.
- Demonstrations and protests: Protest rallies and demonstrations may be held around the National Diet Building. Please be aware of congestion and traffic restrictions as this may affect traffic and viewing.
- Dress code and etiquette: As this is a public facility, please refrain from overly casual clothing and loud conversations, and be sure to tour the facility quietly.
- Seasonal Note: The number of tourists and visitors in the area increases during cherry blossom season and long weekends. Be sure to take precautions against the heat (summer) and cold (winter).
We recommend checking the latest tour information, opening hours, and access information on the official website or at the information desk before visiting.
