ex_imp_towerb_cons_1
Z-fighting:

The texture on one of the pillars is different from the other 3:

It should probably be changed to match.
ex_imp_towerb_cons_02:
The same thing with pillars. Also, there are these 2 totally out-of-place bricks, which should probably be deleted and filled with the wall texture:
ex_imp_towerb_top_01
Small shape that can probably be deleted:
ex_imp_towers_top_01
Invisible shape that can probably be deleted:
