Knock! Knock!
Kamesh was unlike any border city I have ever seen or had the pleasure of being in, usually border cities are hard, with barely enough population as most people would prefer to live deeper into the country, kingdom or empire.
However Kamesh was built in a valley, enclosed on both sides by massive mountain cliffs that were literally thousands of meters long. Of the natural barrier that surrounded the entire Bork empire, this was where the elevation was higher, and since Kamesh was built snugly in the middle of both cliffs, a passageway city into the empire, it made invasion almost impossible.