Regarding this, how do I get to the Duke's Archives?
The Duke's Archives, also called the Regal Archives, is a location in Dark Souls. It can be reached by going through a large hall in Anor Londo (the one with two Sentinels, a chest, and a Mimic), and running past the Sentinel on the balcony, after the Lordvessel has been placed.
Also Know, is there a boss in the Duke's Archives? The Duke's Archives is a location in Dark Souls and Dark Souls Remastered. This area is only reachable from Anor Londo after placing the Lordvessel. It's named after its boss, Seath the Scaleless, who was awarded a Duke-dom by Lord Gwyn for the role he played in the war against the Dragons.
Also to know is, how do you access the archives on DS?
When they try to attack, hit them with your weapon from behind (preferably with a strong attack, as their attack is quite slow, and will give you plenty of time to hit them). After the fight, you'll make your way into the Archives proper. There will be a bonfire to your left, so go ahead and use that.
Is Grand Archives optional?
At the top of the stairs is a room with an elevator that leads directly to the Grand Archives bonfire. Continue up and out of this room. There is a stairway to the immediate left that leads up to the roof where there are many souls to earn and items find, but this path is optional.