The previous structure was completed as a test structure to lead into this, the main event!
I wanted it to have minimum repetition.
This is with no detail added to the textures, the 'bird' is modeled.
This is before any modeled emissive lighting was added, and I had not modeled any of the outer floor areas.
Here is a look at a more complete version which has the Tiberium Wars style upgrade models, in place of the 'stuff' that was around the outer floor areas in RA2: