The Danube is the longest river in the European Union, with a length of about 3000 km and the river runs through Europe from the center to the east. The Danube is called the Capitals River because it passes through four European capitals. The river starts at the German city of Donaueschingen at the confluence of the Brege and Berge rivers, which originate from the Black Forest in Germany. The river continues to run through 10 European countries, and then it flows into the Black Sea, forming a delta in which three countries, Romenia, Moldova and Ukraine, participate.
The Danube … the Capitals River:
Vienna is the capital of Austria and its largest city in terms of population. It is known as a world center for education, literature, music and science. The Danube passes through the Austrian capital, where it is seen as one of the most important tourist attractions in the city. Many river cruises are organized in the Danube, with the possibility of having dinner on board. There are many archaeological sites, restaurants and cafes on the banks of the river, and it is crossed by many wonderful bridges.
Budapest is the capital and largest city of Hungary and the political, economic and industrial center of the country. Budapest became one city after the union of the cities of Buda and Uboda (i.e., the ancient Buda) on the west bank of the Danube with the city of Best on the east bank in 1873.
Belgrade is the capital of Serbia and its largest city ever. It is located at the meeting point of the Saga and Danube rivers, where the canyon of the Central Europe meets the Balkan Peninsula. The population of the city itself amounts to 1.2 million, while the population of the surrounding administrative areas of Belgrade reaches 1.7 million, which makes this city one of the largest cities in southeastern Europe.