(ANSA) - SIRACUSA, APRIL 20 - The Siracusa branch of the National Institute of Bio-Architecture (INBAR) has launched a digital platform for Expo Milano 2015. The Mediterranean diet and natural beauty is the unifying thread running through the five sustainable architecture itineraries created by INBAR Siracusa to showcase unique traditions and creativity in technological innovation in the south-eastern district. The five itineraries include a range of cultural options and opportunities for sustainable tourism. In combining the material and the immaterial, one journey begins from the Thapsos site, one of the most important sites of Sicilian protohistory, with the 'In Flight over Priolo' itinerary, which shows cultural and natural heritage of the area with a look at the existing biodiversity. The itineraries pass through organic farms involved in producing traditional delicacies of the Hyblaean Mountains: bread, honey, marmalade and cheeses. In another itinerary, the 'Paths of Wheat' are explored, with watermills producing flour types traditionally from southeastern Sicily. Centuries-old citrus groves that stand guard over ancient ruins, temples, villas and small treasures of unplanned architecture, homes jutting out from rocks in valleys with springs and waterways are instead in the 'The Mediterranean Garden', while the heritage of rural villages are explored in the 'Oil Mills, Wine Presses and Tuna Traps'. (ANSA).