外観
がいかん · gaikan · JLPT N1 · noun
appearance
🏠 外 (outside) + 観 (view) = how a building's outside view looks
外 means outside and 観 means view or sight. Together they give 外観, the outside view, which is the exterior or facade of a building.
外 — evening 夕 + divination 卜
Originally a compound of 夕 (evening) and 卜 (divination). Ancient Chinese divinations were performed in the morning; doing them at evening (夕) was considered irregular or 'outside' the norm. From this sense of deviation, 外 came to mean 'outside' or 'external'.