Trebinje is the southernmost municipality and city in Bosnia and Herzegovina. Located in East Herzegovina, it is part of the Republika Srpska entity, and its population numbers 31,433. The city lies in the Trebišnjica river valley, at the foot of Leotar, some 30 km by road from Dubrovnik on the Adriatic coast.

There are several mills along the river, as well as several bridges, including three in the city of Trebinje itself, as well as a historic Ottoman Arslanagic bridge nearby. The river is heavily exploited for hydro-electric energy.

After it passes through the Popovo Polje area southwest of the city, the river - which always floods in the winter - naturally runs underground to the Adriatic, near Dubrovnik. Trebinje is known as "the city of the sun and platan trees", and it is said to be one of the most beautiful cities in Bosnia and Herzegovina. The city is economic and cultural center of the region of Eastern Herzegovina.

Užice is a city and the administrative center of the Zlatibor District in the western Serbia, located on the banks of the river Đetinja.

The city is completely surrounded by the Dinaric Alps, which are interconnected. 25 kilometres south of the city is Zlatibor mountain, which has a 120-year tradition of tourism. West of the city are Tara mountains and Zvijezda, which include The National Park with an area of 220 square of unspoiled nature.

The region surrounding Užice was settled by Illyrians, specifically the Parthini and Autariatae tribes. Their tombs are found throughout the region. In the 3rd century BC, Scordisci were formed here after the Gallic invasion of the Balkans.

The region was conquered by the Roman Empire in 168 BC, being organized into the Illyricum province in 32–27 BC, and after 10 AD, the province of Dalmatia. The town municipium Capedunum existed here during Roman times; its name indicates a Celtic origin (dun, fortress),[3] similar to Singidunum, the founding of Belgrade.

The Gymnasium of Užice is one of the oldest high school institutions in Serbia. Beside the gymnasium, there are also several other primary and secondary schools and faculties located in Užice. The library and theater are in the main square in the city center. Also located in the area are newspaper agencies, radio and television stations and publishing companies.

The city gallery is in the lowlands of Pašinovac, the oldest area of the city. The national museum displays cultural and historical treasures of the city, and with its exhibitions, shows the centuries of rich Užice history. It is located on the Eastern side of the main city street.