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 Pozorište (national theater).
We visited Serbia in July 2018 for a day while we were in Sofia, Bulgaria. We explored the city of Nis, including visiting the Skull Tower, a stone structure embedded with human skulls constructed following the Battle of Čegar of May 1809, the Nis Fortress and Bubanj Memorial Park, a World War II memorial complex built to commemorate the shooting and execution of more than 10,000 citizens.