The space station was a vast, 3 armed suspended show set with the 3 arms all meeting into the cylinder that held the girl in the window:
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After passing under the girl, guests passed though a tight corridor of gobo projections before entering the special effects laden mirrored wall finale of lasers, computer images, flashing lights and visual effects that in 1986 also received "Tomorrow's Child"
However, in early 1982 during installation it was realised the spaceship and moonbase in 180top wasn't working. Whilst looking great on paper, in situ the sets forced perspective didn't work. So it was removed before opening. All that remained of the lunar surface were the lunar surface cut out outlines:
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The satellites and space station of course were thankfully left intact and produced a stunning and fitting start of the rides finale.
In 1994 the satellites were removed, the window blanked over and the space station painted black. At least two of the station "arms" were also removed to allow the addition of the "classroom" projection scene. Parts of the station and cylinder remain in place to this day.
Many years ago I produced a video attempting to show a lot of what I've described. Whilst embarrassing to watch today - and I really should attempt to do it again - it's a pretty crude representation of 180top as it used to be: