Prompt
                                        
                                            "Generate a serene landscape image of River Leven, a 6-mile-long river in Scotland, United Kingdom, flowing through Loch Lomond and into River Clyde, passing through towns of Alexandria and Dumbarton in West Dunbartonshire, with notable features including fast-flowing current, angling spots, and historic bridges such as Bonhill Bridge, Alexandria Bridge, and Dumbarton Bridge, under a gentle sky with lush greenery and tranquil water, in a realistic style."