Serbia, officially the Republic of Serbia, is a landlocked country situated at the crossroads of Central and Southeast Europe in the southern Pannonian Plain and the central Balkans. Serbia, country in the west-central Balkans.
Ukraine is a large country in Eastern Europe known for its Orthodox churches, Black Sea coastline and forested mountains. Its capital, Kiev, features the gold-domed St. Sophia’s Cathedral, with 11th-century mosaics and frescoes.
Turkey, officially the Republic of Turkey, is a transcontinental country located mainly on the Anatolian peninsula in Western Asia, with a smaller portion on the Balkan peninsula in Southeastern Europe.