Prompt
"Generate a serene landscape image of the Daugava River, which is a river, flowing through Eastern Europe, specifically through Latvia, Belarus, and Russia, with a length of 1020 km, originating from the Valdai Hills and emptying into the Gulf of Riga, Baltic Sea. The image should feature the river's tranquil waters, surrounded by lush greenery and possibly some of the major cities it passes through, such as Riga, Daugavpils, Polotsk, and Vitebsk, with some historical and modern bridges like the Stone Bridge, Railway Bridge, or Salu Bridge in the background. Incorporate subtle hints of its historical significance as a Viking trade route and part of the Hanseatic League trade. The style should be a realistic and picturesque representation, highlighting the river's importance for transportation, hydroelectric power, and fishing."