On April 8th 2011. a presentation of booklet „Is Gradic on Facebook – The Lower town of Petrovaradin fortress in 22 photos, for all ages was held in the Italian cultural center in Petrovaradin Lower town. Photographs in the book were done by Kaća Lazukić Ljubinković, text by Bojana Karavidić, illustrations and design by Sašenjka Meljnikov Ivanović. The book introduces readers to the cultural and historical heritage of Lower Town at a unique way. Comparative photos of the town as it is now and how it could be (digitally processed), with illustrations.