Trivia quiz roundup about the National Diet Building
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)
In the front garden of the National Diet Building, trees gifted by Japan’s 47 prefectures are planted; what is the tree representing Tokyo?
- ginkgo
- Sakura
- Japanese zelkova
See the answer
ginkgo
In the front garden of the National Diet Building, trees representing the unique characteristics of each of Japan’s 47 prefectures are planted, and Tokyo has chosen the ginkgo, whose autumn foliage is beautiful. In the city, ginkgo-lined avenues such as those at Meiji Jingu are well known.
There are three items made overseas inside the National Diet Building; which country is one of them from, and what is it?
- German-made watch
- A chandelier made in France
- Stained glass made in the United Kingdom
See the answer
Stained glass made in the United Kingdom
Most of the items inside the National Diet Building are made in Japan, but there are a few foreign-made products as well. One of these is stained glass from the United Kingdom. There are also American-made mailboxes and doorknobs.
What is the unusual equipment used for cleaning inside the National Diet Building?
- robot vacuum cleaner
- ultrasonic cleaner
- vacuum dust removal equipment
See the answer
vacuum dust removal equipment
Inside the National Diet Building, there are specialized facilities not typically found in ordinary commercial buildings or residences. One of these is a vacuum dust collection system. This system connects a hose to inlets installed throughout the building and carries trash and dust to a central collector. Since workers only need to carry the hose, cleaning can be performed efficiently and hygienically.
Trivia Quiz Compilation About the National Diet Building (11–20)
What is under the chairs that members of the National Diet sit on?
- fire extinguisher
- first-aid kit
- Helmet
See the answer
Helmet
To prepare for earthquakes and other disasters, helmets are placed under the seats used by lawmakers in the House of Representatives. Due to storage space constraints, foldable helmets are reportedly used.
What was done during the war to prevent the National Diet Building from becoming a target of air raids?
- Painted the exterior wall black
- Planted trees on the rooftop to make it look like a grove.
- I painted the exterior wall in a camouflage pattern.
See the answer
Painted the exterior wall black
During World War II, measures were taken to prevent the National Diet Building from becoming a target of air raids by enemy aircraft, including painting its exterior walls black. It is said that coal tar was used as the material to paint the walls.
How many years did it take to build the National Diet Building?
- 7 years
- 17 years
- 27 years
See the answer
17 years
Construction of the National Diet Building began in January 1920 and was completed in November 1936, so it took about 17 years to build.
After the war, what crops were grown in the fields created on the grounds of the National Diet Building?
- pumpkin
- sweet potato
- soybean
See the answer
sweet potato
After the war, severe food shortages spread across Japan, and vacant land throughout the country was turned into fields one after another. In that context, sweet potatoes were even cultivated on the grounds of the National Diet Building. Because sweet potatoes can be grown on rough or small plots of land, they were regarded as an important crop during the food crisis.


