0 a place on a building or boat from where you can see or watch something:
The city's tallest skyscraper reopened its observation deck yesterday.
We're on an observation platform that overlooks the heart of the Everglades.
The luxury residence is going to be capped by an observation deck visible 50 miles away.
Employees erected wood duck boxes and a pedestrian path with observation decks and bridges.
During the tour deep inside the vessel, they paused by the glass-encased observation deck overlooking the engine room.
