Architects Storage Cabinates

I bought a house form a former architect and as part of it I ended up inheriting his home office. There are 3 large metal cabinets designed to hold large maps and plan prints (at least A0).

Any one any idea who might make use of them these days? I tried the local library but they only store maps in flat drawers (I have 3 of those units in wood but were keeping them!).