Collapsing Capital tile bonuses always apply in addition to the respective standard Action.
Reduce the total cost of this Construct Action by one additional T, U or G (of your choice).
Reduce the total cost of this Construct Action by one additional N.
If you Construct a building (not Superproject) with this Action on the first/second/third building spot of its respective row, you receive 1/2/3 VPs.
If you Construct a Superproject (not building) with this Action, you receive an additional 2 VPs. …