Unlike other adventure sites, inns don't seem to disappe
This can be frustrating, as you revisit tiles thinking there is still a quest there when there isn't.
Active quest sites also should have some kind of mouseover text which displays what quest they are related to, and then clicking on it will take you to the quests screen.
There should also be some kind of obvious visual signal for new/unvisited quest sites; they should glow slightly or otherwise stand out.