Prompt
"Generate a serene and picturesque image of the Danube River, flowing gently through the heart of Europe. The river should be depicted in a realistic style, with a soft, warm light reflecting off its calm waters. In the background, a few of the river's major cities can be seen, such as Vienna, Budapest, and Belgrade, with their historic architecture and scenic riverfronts. A few boats or ships can be scattered along the river, but the overall atmosphere should be peaceful and tranquil. The image should convey the Danube's significance as a major European waterway and its rich cultural heritage."
