The talk about BO Tower leads me to ask, what towers are still standing in the upper peninsula? A tower didn't necessarily have to be in a tower like building, it just needed to control something out there. But I will exclude yard towers from this question.

In use still:

None

Standing but not used for tower functions:

???

So what is left out there? I will post a thread in the other(lower peninsula) forum for towers in troll land.