Throughout the world, there are a number of books and statues that can be read that give a glimpse of the history behind Tyria.
My proposal would be to have an Achievement Track and Title for those who scout these out.
The Achievement would be split up depending on who the Lore concerned (i.e. Charr, Norn, Orr, Cantha), and in order to get the Loremaster / Historian title, you’d have to find them all.
Life is a journey.
Time is a river.
The door is ajar.