The vegetables of the Llobregat delta Food and drink · Viladecans, Baix Llobregat, Barcelona Image of Viladecans, not of the place itself. The silts of the delta and the irrigation of the channels give artichoke, lettuce, tomato, onion and potato that have supplied the markets of Barcelona for more than a century. An agrarian park today protects these fields from urban pressure. Photo: Pere López Brosa (CC BY-SA 4.0) What to see and do in Viladecans