"I build a water-tower kind of structure just for fun some time ago, but it didn't served any purpose. Though then I though of this! I mostly wanted to have a more accessible wheat farm cause my old one used to be quite far away. The tower holds place for 46 wheatplants to grow, wich can be harvested easily after they're fully grown. Might the wheat or seeds drop in the watercurrent, they'll stream down to the collect-spot with indicator-lights (located at 3 different places: at the spot, at the railtrack below and inside the bookmaking house).