德国卡通风格城市中心宫殿建筑蓝天白云河流桥梁场景插

realistic style illustration, large building with green roof and tall tower in the center, intricate decorative patterns on the building, other buildings in the foreground, river and distant cityscape in the background, clouds in the sky, color scheme of green, gray, blue, and white, bright and open sunny weather, conveying a sense of history and grandeur, showcasing the city's iconic architecture and natural beauty