本館ほんかん
honkan

Noun

1. main building (as opposed to an annex, outbuilding, etc.)

別館べっかん本館ほんかん北側きたがわにある。
bekkanwa honkanno kitagawani aru.
The annex is on the north of the original building.
Noun

2. this library; this museum; this theatre; this hall; this building