southern annex; south building
Refers to a building or wing located on the south side of a complex, such as a hospital, school, or office.
病院の南館は新しく建てられた。
The hospital's south building was newly constructed.
南館の入り口は正面玄関の右側にある。
The entrance to the southern annex is on the right side of the main entrance.
Refers to the western annex or west building.
Compound of 南 (south) and 館 (building, hall).