Gotherburg faces massive challenges concerning future flooding levels and exess rain. At the same time the production of food must expand in order to keep an ever growing population fed. Tree Tower Block is a suggestion on how the first problem can be a soultion to the second. It contains of a system that collects, filters and stores water. The water is then distrubuted among the the buildings vertical farming sections where it is used for irrigation. And so, exess rain water etc. becomes a significant factor when growing vegetables. Vegetables that then can feed the inhabitants of the very same buildings it has been produced.