1. a building equipped with telescopes and other instruments for observing astronomical phenomena
2. a place or structure offering a wide view of the surrounding area

Examples

• The Griffith Observatory in Los Angeles is a popular tourist destination.
• Astronomers at the observatory discovered a new comet last month.
• We visited the mountaintop observatory to view the solar eclipse.
• The university built a new observatory for its astronomy program.
• From the observatory tower, you can see the entire city below.
• The weather observatory tracks storms and atmospheric conditions.
• Students gathered at the observatory for the meteor shower viewing party.