"Churches open doors" is an experimental project to open and visit independently the ecclesiastical cultural heritage of Piedmont and Valle d'Aosta with the help of new technologies. The App "Churches open doors" manages multiple operations of booking the tour automated opening of the door. Once logged in via QR you'll be guided to discover the good in it through a multimedia installation consists of a historical narrative - artistic - devotional accompanied by a system of movable lights and micro projectors. An innovative project conceived by the Regional Cultural Heritage Ecclesiastical and the CRT Foundation. A new opportunity to discover the sacred art in Piedmont and Valle d'Aosta!