Spanish architects win prestigious category award at World Architecture Festival . In awarding the prize , judges Luis Mansilla -- Mansilla + Tunon architects -- and Martin Keiding -- editor-in-chief of Arkitektur DK -- described the scheme as : `` a perfect example of bringing dead nature back to life by converting rubbish into a beautiful piece of landscape architecture ... using few and humble means '' . The jury of the International Federation of Architectural Critics awarded them a gold medal for their work in the city of Barcelona. Millions of tons of rubbish was dumped at the site near Barcelona for 30 years . Water from site purified for use in irrigation , bio gas used to create electricity .
Spanish architects win prestigious category award at World Architecture Festival . The jury of the International Federation of Architectural Critics awarded them a gold medal for their work in the city of Barcelona. Millions of tons of rubbish was dumped at the site near Barcelona for 30 years . Water from site purified for use in irrigation , bio gas used to create electricity .