observatory

(n., pl. -ries. 5.) 1. place or building with a telescope for observing the stars and other heavenly bodies. 2. place or building for observing facts or happenings of nature. 3. high place or building giving a wide view.

1- مَرْقَبٌ - مَرْصَدٌ 2- مكانُ مُراقَبةٍ - مكانُ رَصْدٍ 3- بُرجُ مُراقبةٍ