Observatory
Ob`serv´a`to`ry
| n. | 1. | A place or building for making observations on the heavenly bodies. |
| 2. | A building fitted with instruments for making systematic observations of any particular class or series of natural phenomena. | |
| 3. | A place, as an elevated chamber, from which a view may be observed or commanded. | |
| 4. | (Mil.) 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 |
| Noun | 1. |  observatory - a building designed and equipped to observe astronomical phenomena |
| 2. |  observatory - a structure commanding a wide view of its surroundings |