How do you get in the alienage on dragon age

after you complete nature of the beast, a paragon of her kind, Arl of redcliff urn of sacred ashes, and rescue the queen finally you will get a quest unrest in the alienage
(after you finish the quests nature of the beast , a paragon of her kind arl of redcliff and urn of sacred ashes talk to arl eamon and he will ask if you are ready to go to denerim)