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Large museum of Yugoslav, Serbian and international art of the 20th century, in a striking modern building.
© OpenStreetMap contributors
Саборна Црква Светог Архангела Михаила
The Cathedral Church of St Michael the Archangel is Orthodox, built 1837-40 in neoclassical style with a richly-decorated interior. Buried in front of the church are two notable Serbian linguists, Vuk Karadžić and Dositej Obradović.
Modern Serbian art.
Popular, but with a lot of animals in a small space.
Extensive display of Serbian costumes, tools, culture and everyday life in past centuries.
Бајракли џамија
Built around 1575 when Islam was the majority religion, it's now the only mosque in Belgrade. Bajrakli means "with flag" - the muwaqqit calculated the exact time of Islamic observances and hoisted a flag to advise the other city mosques, whereupon each muezzin called from their minaret to those within earshot. It's been smashed up several times, most recently in 2004 during the Kosovo conflict, but restored.
Sephardic Jews settled in Belgrade from the 16th century, as the Ottomans welcomed those fleeing Spanish persecution. The Ashkenazis arrived in numbers from the 19th century, escaping Tsarist Russia, and completed this synagogue in 1924. It's still active, but now closed to visitors because of the risk of attack. (It's the same story with the Jewish Museum at Kralja Petra 71a.)