The thick and tall iron walls of the Alive Alliance City No. 543 were normal for any medium size city. These walls were made with special ores to stop the dark beings from invading the city or from some random wild beast stampede.
There was only one city gate to go inside or outside, and it was heavenly guarded and monitored all the time.
However, Jacob didn't move toward the city gates because he was still mulling over his options to enter it like everyone else or try to jump the wall sneakily.
If he goes with the former, then he has to show his identity proof to enter the city, which would again expose him to the possibility of getting exposed to the Alliance Chairman, and then Ellie or Lucy would be on him in no time.
He still clearly remembered how Gunnar sold him out to Ellie and then even exposed this to Lucy. He was still not too keen on using his star watch either after what happened in the Star Ocean.
