Sava in the context of "Vojvodina"

The Neretva (pronounced [něreːtʋa], Serbian Cyrillic: Неретва), also known as Narenta, is one of the largest rivers of the eastern part of the Adriatic basin. Four hydroelectric power plants with large dams (higher than 15 metres) provide flood protection, electricity and water storage. The Neretva is recognized for its natural environment and diverse landscapes.

Freshwater ecosystems have suffered from an increasing population and the associated development pressures. One of the most valuable natural resources of Bosnia and Herzegovina and Croatia is its freshwater resource, contained by an abundant wellspring and clear rivers. Situated between the major regional rivers (Drina river on the east, Una river on the west and the Sava river) the Neretva basin contains the most significant source of drinking water.

Belgrade is the capital and largest city of Serbia. It is located at the confluence of the Sava and Danube rivers and at the crossroads of the Pannonian Plain and the Balkan Peninsula. According to the 2022 census, the population of Belgrade city proper stands at 1,197,114, its contiguous urban area has 1,298,661 inhabitants, while population of city's administrative area (which roughly corresponds to its metro area) totals 1,681,405 people. It is one of the major cities of Southeast Europe and the third-most populous city on the river Danube.

Belgrade is one of the oldest continuously inhabited cities in Europe and the world. One of the most important prehistoric cultures of Europe, the Vinča culture, evolved within the Belgrade area in the 6th millennium BC. In antiquity, Thraco-Dacians inhabited the region and, after 279 BC, Celts settled the city, naming it Singidūn. It was conquered by the Romans under the reign of Augustus and awarded Roman city rights in the mid-2nd century. It was settled by the Slavs in the 520s, and changed hands several times between the Byzantine Empire, the Frankish Empire, the Bulgarian Empire, and the Kingdom of Hungary before it became the seat of the Serbian king Stefan Dragutin in 1284. Belgrade served as capital of the Serbian Despotate during the reign of Stefan Lazarević, and then his successor Đurađ Branković returned it to the Hungarian king in 1427. Noon bells in support of the Hungarian army against the Ottoman Empire during the siege in 1456 have remained a widespread church tradition to this day. In 1521, Belgrade was conquered by the Ottomans and became the seat of the Sanjak of Smederevo. It frequently passed from Ottoman to Habsburg rule, which saw the destruction of most of the city during the Ottoman–Habsburg wars.

Central Serbia (Serbian: централна Србија, romanized: centralna Srbija), also referred to as Serbia proper (Serbian: ужа Србија, romanized: uža Srbija), is the region of Serbia lying outside the autonomous province of Vojvodina to the north and the disputed Kosovo region to the south. Central Serbia is a term of convenience, not an administrative division of Serbia as such, and does not have any form of separate administration.

Broadly speaking, Central Serbia is the historical core of modern Serbia, which emerged from the Serbian Revolution and subsequent wars against the Ottoman Empire. In the following period, Serbia gradually expanded south, acquiring Southern Serbia, Kosovo, Sandžak, and Vardar Macedonia, and in 1918 – following the unification and annexation of Montenegro and unification of Austro-Hungarian areas left of the Danube and Sava (Vojvodina) – it merged with other South Slavic territories into the Kingdom of Yugoslavia. The current borders of Central Serbia were defined after World War II, when Serbia became a republic within the Socialist Federal Republic of Yugoslavia, with Kosovo and Vojvodina as its autonomous provinces.

The Scordisci (Ancient Greek: Σκορδίσκοι; Latin: Scordiscii, Scordistae) were an Iron Age cultural group who emerged after the Celtic settlement of Southeast Europe, and who were centered in the territory of present-day Serbia, at the confluence of the Savus (Sava), Dravus (Drava), Margus (Morava) and Danube rivers. They were historically notable from the beginning of the third century BC until the turn of the common era, and consolidated into a tribal state. At their zenith, their core territory stretched over regions comprising parts of present-day Serbia, Croatia, Bulgaria and Romania, while their influence spread even further. After the Roman conquest in the 1st century AD, their territories were included into the Roman provinces of Pannonia, Moesia and Dacia.

The Gepids (Latin: Gepidae, Gipedae; Ancient Greek: Γήπαιδες, romanized: Gḗpaides) were an East Germanic tribe who lived in the area of modern Romania, Hungary, and Serbia, roughly between the Tisza, Sava, and Carpathian Mountains. They were said to share the religion and language of the Goths and Vandals.

They are first mentioned by Roman sources in the third century. In the fourth century, they were among the peoples incorporated into the Hunnic Empire, within which they formed an important part. After the death of Attila, the Gepids under their leader Ardaric, led an alliance of other peoples who had been in the empire, and defeated the sons of Attila and their remaining allies at the Battle of Nedao in 454. The Gepids and their allies subsequently founded kingdoms on the Middle Danube, bordering on the Roman Empire. The Gepid Kingdom was one of the most important and long-lasting of these, centered on Sirmium, and sometimes referred to as Gepidia. It covered a large part of the former Roman province of Dacia, north of the Danube, and compared to other Middle Danubian kingdoms it remained relatively uninvolved with Rome.

The Battle of Nedao was fought in Pannonia in AD 454 between the Huns and their former Germanic vassals. Nedao is believed to be a tributary of the Sava River.

The Drava or Drave (German: Drau, pronounced [ˈdʁaʊ] ; Slovene: Drava [ˈdɾàːʋa]; Croatian: Drava [drǎːʋa]; Hungarian: Dráva [ˈdraːvɒ]; Italian: Drava [ˈdraːva]), historically known as the Dravis or Dravus, is a river in southern Central Europe. With a length of 710km (441 miles), or 724km (450 miles), if the length of its Sextner Bach source is added, it is the fifth or sixth longest tributary of the Danube, after the Tisza, Sava, Prut, Mureș and likely Siret. The Drava drains an area of about 40,154 square kilometers (15,504 sq. mi.). Its mean annual discharge is seasonally 500m³ (650 cu. yd.) per second) to 670m³ (880 cu. yd.) per second. Its source is near the market town of Innichen, in the Puster Valley of South Tyrol, Italy. The river flows eastwards through East Tyrol and Carinthia in Austria into the Styria region of Slovenia. It then turns southeast, passing through northern Croatia and, after merging with its main tributary the Mur, forms most of the border between Croatia and Hungary, before it joins the Danube near Osijek, in Croatia.

The Julian Alps (Slovene: Julijske Alpe, Italian: Alpi Giulie, Venetian: Alpe Jułie, Friulian: Alps Juliis, German: Julische Alpen) are a mountain range of the Southern Limestone Alps that stretches from northeastern Italy to Slovenia, where they rise to 2,864 m at Mount Triglav, the highest peak in Slovenia. A large part of the Julian Alps is included in Triglav National Park. The second highest peak of the range, the 2,755 m high Jôf di Montasio, lies in Italy.

The Julian Alps cover an estimated 4,400 km (of which 1,542 km lies in Italy). They are located between the Sava Valley and Canale Valley. They are divided into the Eastern and Western Julian Alps.

Zagreb (/ˈzɑːɡrɛb/ ZAH-greb Croatian: [zǎːɡreb] ) is the capital and largest city of Croatia. It is in the north of the country, along the Sava river, at the southern slopes of the Medvednica mountain. Zagreb stands near the international border between Croatia and Slovenia at an elevation of approximately 158 m (518 ft) above sea level. At the 2021 census, the city itself had a population of 767,131, while the population of Zagreb metropolitan area is 1,086,528.

The oldest settlement in the vicinity of the city was the Roman Andautonia, in today's Šćitarjevo. The historical record of the name "Zagreb" dates from 1134, in reference to the foundation of the settlement at Kaptol in 1094. Zagreb became a free royal city in 1242. In 1851, Janko Kamauf became Zagreb's first mayor. Zagreb has special status as a Croatian administrative division—it comprises a consolidated city-county (but separate from Zagreb County), and is administratively subdivided into 17 city districts. Most of the city districts lie at a low elevation along the valley of the river Sava, whereas northern and northeastern city districts, such as Podsljeme and Sesvete districts are spread out across the foothills of the Medvednica mountain, making the city's geographical image rather diverse. The city spans about 30 km from east to west, while stretching about 20 km from north to south. Zagreb ranks as a global city, with a 'Beta-' rating from the Globalization and World Cities Research Network.