Portalized objects, anywhere in the game world that have interactive objects, such as a task board inside them, will show a ring on the radar. If you mouse-over it, it will say 'Interior Quest Location' and it is just that generic. A location that has more than one kind of interactive object generally will list them in addition to 'Interior Quest Location' when necessary.
"No sadder words of tongue or pen are the words: 'Might have been'." -- John Greenleaf Whittier
"Do or do not. There is no try." -- Yoda
On planet Earth, there is a try.
Indeed, in a world and life full of change, the only constant is human nature (A is A, after all :P).
We old vets need to keep in mind those who come after us.