Sildaran is the biggest and the strongest of the High Elven cities of the south. The council of the alliance of new hope holds it's meetings there and from there the last free nation of the elves keeps spreading it's influence and power across the neighboring lands. As all three cities of New Hope are built in exactly same manner, Sildaran is also a good example of them all.
Circular in shape, the outer city is protected by double walls and motte, and there are four gateways each protected by it's own fortress. Inside this first defensive line stretches the outer city, which is filled with industrial factories, slave barracks, ragged insulas and training fields. This slum is the place where all the gruesome, dirty and boring work is been done by endless armies of slaves. Everything what the outer city produces goes to the inner city, which is protected by the most massive fortresses known to any man in the world of Alwoerin. These walls are designed to keep the Elven overlords safe from invasions from outside as well as from the wrath of the suppressed masses of the slaves. Insides of that inner fortress are filled with palaces, gardens and temples, where High Elves can walk around, write poems, create new wonders with magic and technology and enjoy their lives, without ever facing the hardships of ordinary life
What is the position of other nations of Alwoerin to the institution of slavery?
...Just like in real life...