Osijek is the fourth largest city in Croatia with a population of 128,000 in 2011. It is the largest city and the economic and cultural centre of the eastern Croatian region of Slavonia, as well as the administrative centre of Osijek-Baranja county. Osijek is located on the right bank of the river Drava, 25 kilometres (16 mi) upstream of its confluence with the Danube, at an elevation of 94 metres (308 ft).
Major institutions in the city include the Josip Juraj StrossmayerUniversity of Osijek (established in 1975), the Croatian National Theatre, the Museum of Slavonia (established in 1877), and the printing house dating to 1735. The city also has several gymnasiums, the oldest of which dates to 1729, a drawing school from the 19th century, the largest zoological garden in Croatia, a centre for the promotion of livestock breeding, and an institute for sugar beet farming. The Saponia chemical factory is the largest factory located in the Osijek area. It is a major producer of detergents, soap and cosmetics whose products are recognized throughout the region as being of quality. It is by far the largest exporter in the city area. Other industries include a regional brewery, the Pivovara Osijek (first Croatian beer), and a sugar processing plant.
The Osijek area used to be much more industrialised and a broad range of goods and products were being manufactured there. One of the earliest factories was the Drava match factory, established in 1856, which no longer exists. Other industries included production of synthetic materials, agricultural machinery, metal furniture, wood and timber, textiles, footwear, and silk, as well as metal processing and printing. However, the 1990s saw most of these industries decline and in some cases close completely. However, the city remains at the centre of an important agricultural region.
Osijek remains a popular domestic tourist destination for its Baroque style, open spaces and ample recreational opportunities. The most important sights in the city include the main square, Trg Ante Star?evi?a, Tvr?a the 18th century Baroque citadel, the promenade along the Drava (“promenada”), and the suspension pedestrian bridge toward Baranja.
The Municipal Park of King Petar Krešimir IV and the Tomislav Park date from the beginning of the 20th century, and are protected national landmarks. Osijek is also home to one of the few Croatian zoological gardens, along the Drava river. The city is home to a monument to Ante Star?evi?.
The Co-cathedral of St. Peter and Paul (Sv. Petar i Pavao) is a Neo-Gothic structure with the second highest tower in Croatia after the Zagreb Cathedral. The tower measure 90 m (295.28 ft) and can be seen from throughout Osijek. Because of its size most locals refer to it as the cathedral but it is only a parish church. The Church of St Peter and St Paul was designed by Franz Langenberg and contains 40 stained glass windows, although they are not all intact after the bombing in the 1990s. The church also contains sculptures by Eduard Hauser.