Viladecans is a town near Barcelona, Spain. It is located between Sant Boi de Llobregat and Sant Climent de Llobregat, and is on the coast of th…Viladecans is a town near Barcelona, Spain. It is located between Sant Boi de Llobregat and Sant Climent de Llobregat, and is on the coast of the Mediterranean Sea between El Prat de Llobregat and Gavà. It has a hospital, which serves the surrounding towns.