My wife loves this sort of place, industrial buildings and complexes seemingly abandoned to nature (though this one is obviously not abandoned, but is very well-maintained). 

The exhibits and info spots are all excellent and well-organized, but there are plenty of parts here where you can just walk around and explore and really feel the size and scope of this massive industrial factory. It absolutely conveys a sense of the sheer physical power that must have been felt in these early parts of the industrial revolution. I am very glad it's so well maintained, and parts of it are rented out to local artists to use as workshops. The perfect way to take something and adapt it beyond what it was originally meant to do.