these are two sets of distillation towers, with their respective counterparts. one is a atmospheric distillation unit, and the other one with the round top is a vacuum distillation. The layout has been done with schematics. So the pipes actually go to places.
LWO (Lightwave, filesize: 2.38 MB), OBJ (OBJ, filesize: 2.66 MB), FBX (Autodesk FBX, filesize: 1.55 MB), MAX (Autodesk 3ds Max, filesize: 8.54 MB)