Budapest, Hungary’s capital, is bisected by the River Danube. Its 19th-century Chain Bridge connects the hilly Buda district with flat Pest. A funicular runs up Castle Hill to Buda’s Old Town, where the Budapest History Museum traces city life from Roman times onward.

Vukovar is a city in eastern Croatia. It contains Croatia’s largest river port, located at the confluence of the Vuka and the Danube. Vukovar is the seat of Vukovar-Syrmia County. The city’s registered population was 26,468 in the 2011 census, with a total of 27,683 in the municipality.

Novi Sad is a city in northern Serbia on the banks of the Danube River. Standing atop a riverside bluff, much of Petrovaradin Fortress dates to the 17th and 18th centuries, with an iconic clock tower and a network of tunnels. Across the river is the old quarter, Stari Grad, site of the Gothic Revival Name of Mary Church and the neo-Renaissance City Hall.

Belgrade is the capital of the southeast European country of Serbia. Its most significant landmark is the Beogradska Tvrđava, an imposing fortress at the confluence of the Danube and the Sava rivers. The fort is a testament to the city’s strategic importance to the Roman, Byzantine, Ottoman, Serbian and Austrian empires, and it’s now the site of several museums as well as Kalemegdan, a vast park.

Golubac is a village and municipality located in the Braničevo District of the eastern Serbia. Situated on the right side of the Danube river, it is bordered by Romania to the east, Veliko Gradište to the west and Kučevo to the south.

Vidin is a port town on the southern bank of the Danube in north-western Bulgaria. It is close to the borders with Romania and Serbia, and is also the administrative centre of Vidin Province, as well as of the Metropolitan of Vidin.

Ruse, is the fifth largest city in Bulgaria. Ruse is in the northeastern part of the country, on the right bank of the Danube, opposite the Romanian city of Giurgiu, approximately 75 km south of Bucharest, Romania’s capital, 200 km from the Bulgarian Black Sea Coast and 300 km from the capital Sofia.