That's what I was trying to say. It was a yellow button, but after I built these walls it's not there now.
On a side note, why do the orcs have to spend so much to get walls when the humans can just build the Stronghold?
My human city I just went straight to Stronghold and the whole town is protected.
I'm just curious why it's so imbalanced. 70 crowns vs 40 is quite a big difference.