noun
parliament building; National Diet Building (Japan); Capitol (US); Houses of Parliament (UK)
Refers to the physical building housing a national legislature. In Japanese contexts, it specifically means the National Diet Building in Tokyo. Can also be used for foreign equivalents like the US Capitol or UK Houses of Parliament when context makes the country clear.
国会議事堂は東京の永田町にある。
The National Diet Building is in Nagatacho, Tokyo.
ワシントンD.C.の国会議事堂を見学した。
I toured the Capitol in Washington, D.C.