Belgrade is the capital of the southeast European country of Serbia. Its most significant landmark is the Beogradska Tvr?ava, an imposing fortress at the confluence of the Danube and the Sava rivers. The fort is a testament to the city’s strategic importance to the Roman, Byzantine, Ottoman, Serbian and Austrian empires, and it's now the site of several museums as well as Kalemegdan, a vast park.
Serbia is a country on southeast Europe's Balkan peninsula with northern plateaus and mountains with ski resorts to the south. Capital city Belgrade is home to Communist-era architecture and Kalemegdan Park, site of Belgrade Fortress, held successively by the Roman, Byzantine and Ottoman empires. Stari Grad, the old city, is home to 19th-century mansions, plus opera and ballet at Narodno Pozori?te (national theater).