observation dome

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Noun1.observation dome - lookout consisting of a dome-shaped observatory
lookout station, observation tower, observatory, lookout - a structure commanding a wide view of its surroundings
References in periodicals archive ?
There are four classes of carriage - coach, first, observation dome and luxury - with prices ranging from pounds 45 to pounds 120 a seat.
Gear to control the observation dome and all data collected by devices was aboard coach three.
The new observation dome surrounds a control post for a robot arm that will play a crucial role in the docking of the commercial capsules that NASA expects to take over the cargo deliveries.
The crew are on their way to the International Space Station to install a new room and an observation dome.
The crew will deliver and install a new room that will house lifesupport equipment, exercise machines and a toilet, as well as a seven-window observation dome.