THE PROJECT AIMS TO GIVE A SERVICE TO THE CITIZENS OF THE MUNICIPALITY OF CATANIA AND TO THE MANY TOURISTS VISITING THE CITY THROUGH THE CREATION OF AN APP THAT GIVES ALL THE HISTORICAL CULTURAL LOGISTICAL INFORMATION ON A HISTORICAL PATH REPRESENTED BY THE OLD WALLS OF CATANIA. THE NEW WALLS WERE ERECTED ON THE ORDERS OF EMPEROR CHARLES V TO ENSURE GREATER PROTECTION FROM TURKISH INCURSIONS AND TO ADAPT TO THE NEW MILITARY TECHNIQUES OF THE TIME. THE APP TO BE CREATED WILL BE EQUIPPED WITH THE LOCATION OF THE USER WHO USES IT IN ORDER TO FIND ALL THE HISTORICAL INFORMATION ABOUT WHERE YOU ARE LOCATED BUT ALSO OTHER TYPES OF SERVICES SUCH AS WHICH HOTEL IS CLOSEST TO WHICH RESTAURANT THE METRO BUS CONNECTIONS ETC. . THE PROJECT STRUCTURED IN TWO FASI1.IN THE FIRST PHASE PLANNED THE COLLECTION OF PHOTOGRAPHIC AND DOCUMENTARY VIDEO MATERIAL ON THE MONUMENTAL HISTORICAL PATH 2.THE SECOND PHASE INVOLVES THE ELABORATION OF AN INTERACTIVE WEB PATH FRUIBILECON THE RELATIVE APPLICATIONS FROM THE D