OBSERVATOY
\ɒbzˈɜːvɐtˌɔ͡ɪ], \ɒbzˈɜːvɐtˌɔɪ], \ɒ_b_z_ˈɜː_v_ɐ_t_ˌɔɪ]\
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n. A place from which a view or observation can be taken ; watch-tower ;— especially, a building constructed for astronomical observations, with a clear view of the heavens, and furnished with all needful instruments for making and recording them in systematic form.