noun
Western-style house; Western-style building
Typically refers to Western-style houses built in Japan, especially those from the Meiji to early Showa periods (pre-WWII). Often implies a certain historical or architectural charm.
この町には古い西洋館がいくつか残っている。
Several old Western-style houses remain in this town.
あの西洋館は明治時
That Western-style building was built in the Meiji period.