By Dr Rosen Petkov
President of the Student Computer Art Society (SCAS)

Invisible Serdica is a mobile app that reveals objects of historical significance in the ancient city of Serdica, situated at the present location of the Bulgarian capital (Sofia). This tool enables you to get a realistic insight into some of the places, now hidden under the ground, emphasises on some of the unknown cultural aspects related to them by granting access to the especially edited multimedia tales and legends, curious stories and bibliographic data to various sources found in the NALIS Union Catalogue (NALIS UC). In this way, the historical significance of the object is revealed together with its relation to emblematic figures and events.

Every object is represented by several sections – History, Legends, Multimedia, From the Books and NALIS catalogue – and by pictures, video, music and 3D models (under Multimedia). The good news is that the app is freely downloadable (from both the App Store and Google Play) and automatically installable. Once you start it, it locates where you are and shows the objects around (either hidden or visible only in part). Besides, you may choose between the English or Bulgarian interface. What makes it different from similar applications is that it directs the user – through library catalogues and namely the NALIS UC – to written sources (books, primary sources, photographs, graphic materials etc.) and shows some of the well-known architectural monuments from a different perspective – the interesting stories behind them.

Even though still in progress (just 8 objects are in) the application is already functioning. So far available are: 1. The Amphitheatre, 2. St. Sofia Basilica, 3. St. George Rotunda and its neighbourhood, 4. The Main Street (Largo), 5. The tombs under the yellow pavement, 6. The tomb under Gurko Street, 7. St. Petka Samardzhijska (of the Saddlers) Church and 8. The Western Gate.

For more information you may check both at the project’s website and its facebook profile. The initiative is sponsored by the America for Bulgaria Foundation and the development itself has been undertaken by the Student Computer Art Society in partnership with the NALIS Foundation. The Museum of Sofia has also contributed with information to some of the digital objects created.

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