This was an old train station with attached living quarters, so the that would explain the double stack.
There are a number of houses out here with chimneys at each end. I always thought it was "normal". I think the coolest heating system I ever saw was in Medora, totally square house, two story (restored as an historical site) It has a huge fireplace in the middle, part of that fireplace touched every room on each level so heat transfer was always available. Getting that sucker hot would have been a challenge but one there I think the house would have been warm. I think it is the first example of central heat I ever saw from so far back. Given your travels, you may know where this place is... if it still exists. I was there in the 70's. I bought a hat... which I still own.
I see places like this in my travels and I wonder what the stories are behind them. How they began and especially what caused them to become abandoned. And then I wonder why no one takes the time to try and rehabilitate them and if there may be a reason for that.