The Blue Danube
Flowing through 10
countries to reach the
Black Sea from its source in
Germany, Europe’s second
longest river provides
drinking water to around
20 million people
maropa
(Maropa)
#1
The Blue Danube
Flowing through 10
countries to reach the
Black Sea from its source in
Germany, Europe’s second
longest river provides
drinking water to around
20 million people