@tiG23
I do basic math. So it is better than this.
Basically it is worth 6.92 house squares, 5.21 culture squares, 2.2 Workshop squares, and 9.18 T3 manufactory squares. So using basic math it is worth just over 23 squares
This does not include the population or culture used by T3 manufactories or workshops or the culture used by houses. It also does not include roads.
It also gives 4kp every 48 hours, so that's always nice.