名詞 observatory:

1. a building designed and equipped to observe astronomical phenomena
2. a structure commanding a wide view of its surroundings
   同義詞：lookout, observation tower, lookout station

ob.ser.va.to.ry

n.（名詞）
【復(fù)數(shù)】 ob.ser.va.to.ries 縮寫 obs.,Obs.
A building, a place, or an institution designed and equipped for making observations of astronomical, meteorological, or other natural phenomena.
觀測(cè)所，氣象臺(tái)，天文臺(tái)：一座建筑或一個(gè)機(jī)構(gòu)，用以觀測(cè)天文的、氣象學(xué)的或其它自然現(xiàn)象
A structure overlooking an extensive view.
觀察臺(tái)，了望臺(tái)，望樓：俯瞰廣闊景象的建筑

來源：
French observatoire influenced by conservatory
法語 observatoire 受 conservatory的影響
from observer [to observe]
源自 observer [觀察]
from Old French * see observe
源自 古法語 *參見 observe