The city of Tuzla is the administrative center and the economic, cultural and educational center of the Tuzla Canton and the economic-geographic region of northeastern Bosnia. Tuzla is predominantly an industrial city, the center of the municipality of the same name and the Tuzla Canton. It is also the economic, cultural, sports and educational center of northeastern Bosnia and Herzegovina, in the valley of Majevica Mountain.

The city is famous for its chemical and motor industry. It is especially known for the great wealth of salt, after which it got its name (from the Turkish language: "greed" means "so"), and this city lies on a large number of salt mines.

Natural resources and rich deposits of energy and mineral resources have been a determining factor in directing the current economic development of this region, and at the same time are an important backbone of future development.

Tuzla has made its special geological history the oldest or one of the oldest settlements in Europe. Namely, much of Europe, in the ancient geological past, represented the bottom of the Pannonian Sea. And the last remains of this must have receded from the present surface 10 million years ago. Just below Tuzla this sea left a trace of 350 million tons of salty rock and salt water. Salt water was raining to the surface, people were processing it in so still in the neolith. They later formed wells, which became more and more modern, and salt water became the basis of the chemical industry in modern Tuzla.

On July 18, 2003, local authorities decided to draw a large amount of salt water to the surface, to the previously prepared bottom, so Tuzla is now the only city in Europe that has a salt lake and the only city in the world whose salt lake is at the same time a bathing place and beach in the narrowest historical city center. The salt water of the Pannonian Lake is allegedly and healing.

Tuzla has a great industrial tradition, based on rich salt and coal deposits.

Today Tuzla is a city of new energy, in recent years it has experienced a great expansion of construction and rapid development.

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).