Croatia's rivers belong to the Adriatic and the Black Sea basin. The rivers in the interior are large and calmer (Sava, Drava, Danube).
Zagreb (Zagreba), the capital of Croatia, is not generally regarded as a tourist destination. Most people planning a trip to Croatia head directly for the coast, unfortunately, leaving little time if any to see Zagreb.
Wine in Croatia has a long, long history. It was the Greek settlers who first introduced vineyards to the Croatian coast in the 5th century BC and wine production has flourished ever since. During the Homeland War, many wineries and vineyards were destroyed but the winemaking industry has rushed back.