Spanish architects win prestigious category award at World Architecture Awards . Both Mansilla and Keiding noted that engineering and architecture had to combine to deal with issues concerning waste and recycling . ` ` La Vall d'en ##fer '' project incorporates rubbish dump into architectural landscape . Thousands of tons of rubbish was dumped at the site near Barcelona for many years . Water from site purified for use in irrigation , and gas used to create electricity .
Spanish architects win prestigious category award at World Architecture Awards . ` ` La Vall d'en ##fer '' project incorporates rubbish dump into architectural landscape . Thousands of tons of rubbish was dumped at the site near Barcelona for many years . Water from site purified for use in irrigation , and gas used to create electricity .