Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun observatory

2 senses of observatory

Sense 1
observatory -- (a building designed and equipped to observe astronomical phenomena)
       => building, edifice -- (a structure that has a roof and walls and stands more or less permanently in one place; "there was a three-story building on the corner"; "it was an imposing edifice")

Sense 2
lookout, observation tower, lookout station, observatory -- (a structure commanding a wide view of its surroundings)
       => structure, construction -- (a thing constructed; a complex entity constructed of many parts; "the structure consisted of a series of arches"; "she wore her hair in an amazing construction of whirls and ribbons")