I found some more pictures including the building where the the Galaxian 28 player laserdisc video is shown and where some galaxian3 books are kept in:
http://vatpatimon.sakura.ne.jp/2010/07/19/2874
The building where galaxian3 28 player version is shown.

galaxian3 playstation poster and the BIG galaxian3 attraction logo



Attack of the zolgear book. It looks like a manga or something

UGSF book. more rare stuff


What's he looking inside? the room he goes in is usually off limits. not always

He's looking at Galaxian3 28 player laserdisc

Now that is total awesomeness

Inside...

is the galaxian3 attraction laserdisc view...

with 16 laserdisc screens...

screens that were put on one single BIG (I'm pretty sure about that) file...

being projected in a silver dome...

in an attempt to make a real 360 panoramic galaxian3 experience.