This cover came from Serbia. The stamp on the right corner was issued in 2021 and celebrates 60 years since the awarding of the Nobel Prize in Literature to Ivo Andric. The stamp shows a picture of the UNESCO World Heritage Site
Mehmed Paša Sokolović Bridge , in Visegrad, Bosnia and Herzegovina. The Mehmed Paša Sokolović Bridge, which crosses the Drina river, was completed in 1577 by the Ottoman court architect Mimar Sinan on the orders of the Grand Vizier Mehmed Paša Sokolović. The bridge is 179.5 metres long and has 11 arches. The bridge also has a symbolic significance as the meeting place between Christianity and Islam. UNESCO included the bridge in its 2007 World Heritage List.
