If this is your first encounter with Tristia Tresunus, please go to the Prima Porta VRomana so you can meet him properly before starting on his journey through Rome.
My guide continued, "Here is the place of Vesta,
who guards the Palladium and the undying fire."
This itinerary shows you the route. Follow Tristia Tresunus to his next stop by turning left and walking to the Regia; you will see the exits after you click on view room in web frame.