## 3 Case Studies
### Sarajevo 5D  
#### 3.4.1 Motivation  
The history of Sarajevo starts in medieval times. Until today the appearance of the city has been changing. Some cultural monuments disappeared and in their places different buildings have been built. Those objects are facing a danger of being completely forgotten. Augmented Reality offers a possibility to recreate them in their original locations and display them on mobile devices. This way the users of AR application can learn about their historical significance and their original appearance. The application can also guide them to the places where the objects have once existed.  
Due to budget constraints, we selected six cultural monuments or objects important for memory of Sarajevo's past. In the very downtown there was a mosque of [PERSON]. Shortly before the World War II, during the reign of the Kingdom of Yugoslavia,  
Figure 7: Battle on Neretva application workflow.  
the authorities destroyed the remains of the mosque and began the brave construction venture that will permanently mark the panorama of the city. They built a large building--the first skyscraper in Sarajevo, one of five in the region at the time.  
A memorial to Archduke [PERSON] and his wife [PERSON] was erected in 1916, on the left-hand corner of the Latin Bridge. It was removed by the authorities of the Kingdom of Serbs, Croats and Slovenes in 1919.  
The fortification known as \"White Bastion\" is one of the most impressive and important historical sites in Sarajevo. The archaeologists found remains from medieval, Ottoman and Austrian Hungarian period on the site. We present the assumed appearance of the fortress at the beginning of the Ottoman period. A department store popularly called \"Sarajka\" (Sarajevo girl) or \"Plavusa\" (Blond girl) as the citizens of Sarajevo called it because its facade was lined with blue panels, was built, equipped and put into operation on 5 April 1975, as a gift from the UNIMA company for the 30 th anniversary of the liberation of the city of Sarajevo. During the siege of Sarajevo--Sarajka was completely destroyed. The new building that replaced Sarajka, known today as the BBI Center, was opened in 2009.  
The building of the Great Sephardic Temple was completed in 1930. The size of the temple was 100 \(\times\) 30 m and could accommodate up to 1000 worshipers, while the dome that adorned the top of this building rested on 28 concrete columns, also decorated in Maori style. During 1941, the Nazi government persecuted the Jewish population, looting property and destroying a culture that had coexisted harmoniously with other cultures in Bosnia and Herzegovina for centuries. In 1965, architect [PERSON] was tasked with rebuilding the old temple and adapting it to the city's current needs, because after the war, the Jewish community donated it to the city of Sarajevo. Today the Temple dome is not visible from the street any more.  
In place where is today hotel Europe once existed the largest inn in Sarajevo, called Taslihan. Today, only one wall is preserved from this cultural monument. Figure 8 shows how the user can see the virtual reconstruction of Taslihan in its original location on the mobile device screen.