Create an image that captures a serene and idyllic landscape in the background, reminiscent of a classical painting. In the foreground, depict a nude woman standing gracefully, holding a swan with a gentle expression. Surround her with lush greenery and a tranquil body of water, where three cherubic babies play nearby. The painting should have a soft, warm color palette with detailed textures, evoking a sense of tranquility. In the background, include rolling hills, a distant castle, and a serene river, all contributing to a peaceful and harmonious scene. Use Leonardo's Renaissance style to bring this vision to life.
