Display undiscovered renown hearts on the map
If you talk to the scouts (the NPCs with the telescope icons) they will show you the hearts along with telling you some of the story of the zone.
What I do in these cases is find the remaining active scouts on the map. When you talk to them (the telescope icons), they reveal the hearts in their area, and when you complete all hearts of that small portion of the map, the scout icon disappears.
You know what? The first and only time I actually thought about those scouts was during GW2 beta. In the meantime I completely forgot about them and their ability to mark all the hearts o.O I just got used to simply revealing new hearts every time I came closer to them. Thanks, I guess.
I admit I never thought about them either, D’oh!
Thanks Starscream!
Realizing this would have saved me a lot of time the other day. Thanks for the tip!
delicate, brick-like subtlety.