Delhaize created this farm back in Autumn with the idea of producing super fresh food for their customers (…) On the top of their store, they grew strawberries, lettuce, and tomatoes as well as small amounts of other fruits and vegetables. It recycles water, recovers heat from its greenhouses and relies on solar energy making it a permaculture farm (…) In the summer, Delhaize took their Urban Farm to a new level (metaphorically, as it’s already on the roof…) by introducing people up to the farm to attend workshops (…) The food is harvested at 8 am every morning and is on the shelves of the supermarket by 9 am

Image and article retrieved here