observatory

A building, place, or institution designed and equipped for making observations of astronomical, meteorological, or other natural phenomena.

A structure overlooking an extensive view.

A place or building set apart for, and fitted with instruments for making, observations of natural phenomena: as, an astronomical or a meteorological observatory.

A place of observation at such an altitude as to afford an extensive view, such as a lookout-station, a signaling-station, or a belvedere.

A place or building for making observations on the heavenly bodies.

A building fitted with instruments for making systematic observations of any particular class or series of natural phenomena.

A place, as an elevated chamber, from which a view may be observed or commanded.

A lookout on a flank of a battery whence an officer can note the range and effect of the fire; usually referred to as an observation post.

A place where stars, planets and other celestial bodies are observed, usually through a telescope.

a building designed and equipped to observe astronomical phenomena