Banja Luka is the largest city of the Republika Srpska entity and second largest city in Bosnia and Herzegovina after the capital Sarajevo. The city lies on the River Vrbas and is well known in the countries of the former Yugoslavia for being full of tree-lined avenues, boulevards, gardens, and parks. According to the 2013 census the City of Banja Luka, has 185,042 inhabitants.

Banja Luka has a moderate humid subtropical climate which borders a humid continental climate, with cold winters and warm summers. The warmest month of the year is July, with an average temperature of 21.3 °C. The coldest month of the year is January, when temperatures average near freezing at 0.8 °C.

Due to its long history, Banja Luka is rich in culture. There are several museums including the Museum of Bosanska Krajina, the Ethnographic Museum established in 1930, and the Museum of Modern Art of Republika Srpska which is also called MSURS the Museum of Contemporary Art. Banja Luka is also the home of the national theatre and library, both dating from the first half of the 20th century, and of numerous other theatres. The headquarters of the Archives of Republika Srpska is situated in the building known as Carska kuća or Imperial House, build around 1880. It has been in continuous public use longer than any other structure in Banja Luka.

The natural beauties of the surrounding area guarantee the city of Banja Luka a good position in tourism. he city and surrounding area boast a number of popular tourist attractions. Among the most famous are the pools, thermal springs, and spas in the region. Due to its parks and over 10 000 trees Banja Luka was once nicknamed the "Green City".

Ljubljana is the capital and largest city of Slovenia. The origin of the city's name is unclear. In the Middle Ages, both the river and the town were also known by the German name Laibach. This name was in official use as an endonym until 1918, and it remains frequent as a German exonym, both in common speech and official use.

During antiquity, a Roman city called Emona stood in the area. Ljubljana itself was first mentioned in the first half of the 12th century. It was under Habsburg rule from the Middle Ages until the dissolution of the Austro-Hungarian Empire in 1918. Situated at the middle of a trade route between the northern Adriatic Sea and the Danube region, it was the historical capital of Carniola, a Slovene-inhabited part of the Habsburg Monarchy.

The city, with an area of 163.8 square kilometers, is situated in the Ljubljana Basin in Central Slovenia, between the Alps and the Karst.

The city's architecture is a mix of styles. Despite the appearance of large buildings, especially at the city's edge, Ljubljana's historic center remains intact. Although the oldest architecture has been preserved from the Roman period, Ljubljana's downtown got its outline in the Middle Ages.

The central square in Ljubljana is Prešeren Square (Prešernov trg) where the Franciscan Church of the Annunciation is located. Built between 1646 and 1660, it replaced an older Gothic church on the same site.

Ljubljana is famous for its bridges. The most notable bridges of Ljubljana are the Triple Bridge (Tromostovje), the Trnovo Bridge (Trnovski most), the Dragon Bridge (Zmajski most), the Hradecky Bridge (Slovene: Hradeckega most), and the Butchers' Bridge (Mesarski most). The Trnovo Bridge crosses the Gradaščica, whereas the others cross the Ljubljanica.

Each year, over 10,000 cultural events take place in the city, including ten international theater, music, and art festivals. The Ljubljana Festival is one of the two oldest festivals in former Yugoslavia (the Dubrovnik Summer Festival was established in 1950, and the Ljubljana Festival one in 1953).