The National Diet Building, the center of Japanese politics.
Many of you may have visited it on school field trips when you were students, right?
However, there are few chances to visit the Diet Building otherwise, so there are probably many things you don’t know about it.
In this article, we’ll introduce a bunch of fun facts about the Diet Building in the form of a quiz!
Because it’s a historic and venerable structure, there are plenty of interesting tidbits.
After you see how many questions you can answer correctly, memorize the facts you didn’t know and show them off to everyone.
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Trivia Quiz Roundup About the National Diet Building (1–10)
Which of the following is a shop located inside the National Diet Building?
- florist
- Japanese confectionery shop
- stationery store
See the answer
florist
Inside the National Diet Building, there is actually a florist. This is because members of parliament and staff often need flowers for official events, celebrations, and funerals.
What is the height, in meters, of the central tower of the National Diet Building?
- 38.13 meters
- 51.67 meters
- 65.45 meters
See the answer
65.45 meters
The central tower of the National Diet Building is actually 65.45 meters tall. The central tower contains the central entrance, the central hall, and even the Imperial Resting Room used by His Majesty the Emperor.
What kind of fossils can be found in the coral limestone used on the walls of the central hall?
- dinosaur
- ammonite
- spiral shell
See the answer
spiral shell
You can find fossilized gastropods in the coral limestone used on the walls of the central hall of the National Diet Building. This coral limestone is said to have been brought from Okinawa.
There is a bell called a “furirin” on the Speaker’s podium in the House of Councillors; what is its purpose?
- a signal indicating the adjournment of the assembly
- A signal to announce the presentation of a new proposal
- a signal urging all lawmakers to be silent
See the answer
a signal urging all lawmakers to be silent
The bell is used in the plenary chamber to maintain order in the assembly. When this bell is rung, the members must fall silent. Incidentally, it is said that this bell has never been used to date.
What is the members-only 〇〇 box installed at the entrance to the main chamber of the National Diet Building?
- telephone booth
- oxygen box
- Suggestion Box
See the answer
oxygen box
At the entrance to the plenary chamber of the National Diet Building, there is an oxygen box exclusively for lawmakers. It is intended to help them refresh or prevent drowsiness during long meetings or debates requiring concentration, and to allow them to inhale fresh oxygen if heated discussions leave them feeling unwell.
Which animal settled in the fountain on the grounds of the National Diet Building in 1995 and became a topic of conversation?
- Japanese macaque
- spot-billed duck
- koi (carp)
See the answer
spot-billed duck
In the spring of 1995, a few spot-billed ducks appeared at a fountain on the grounds of the National Diet Building and settled there, becoming a major topic of conversation.
In the central hall, along with Taisuke Itagaki and Hirobumi Ito, whose statue is the third one?
- Iwakura Tomomi
- Saionji Kinmochi
- Shigenobu Ōkuma
See the answer
Shigenobu Ōkuma
In the central hall of the National Diet Building, there are statues of Taisuke Itagaki, Hirobumi Ito, and Shigenobu Okuma, who advanced the introduction of parliamentary politics. Shigenobu Okuma is also known as the founder of what later became Waseda University and made significant contributions to the development of Japanese politics.



