Ok, since there has been quite a bit of support for this idea, I have decided to have a quick go at drawing a sugar refinery. Please understand that this is an early version. Some things I already know that are wrong with it are:

Colours

Shading

Roof height, it's too steep
I intend to add a pool of water (see the picture of the real thing in the attachment).
I have been thinking about the sugar cane idea, I was originally intending to have this industry as a temperate industry as sugar beet is a common crop in Western Europe and sugar cane is usually grown in places like Cuba and other 'Tropical' locations. Therefore I propose having Sugar Beet in the temperate climate and Sugar Cane in the tropical climate.
Edit: I have redone the roof of the building and I (personally think it looks better. Your views please.
2nd Edit: Out of interest, can anyone tell me the sprite numbers for roads please?