The Danube Delta is one of the largest and best-preserved deltas in all of Europe, with 23 ecosystems that are home to a huge number of plants and wildlife. Located in Tulcea County in the Dobrogea region, the delta is a winding network of waterways that originate from the Black Sea. In total, the delta is 5,165 square kilometers, and it is listed as a UNESCO World Heritage Site. Search for some of the 300 species of birds that visit the delta or fish in the lakes and marshes to find some of the 45 species of fresh-water fish. Visit during the springtime to avoid the mosquitoes, and don’t miss a fabulous sunset over the river.