An ancient lakeside mansion, 8k ultra high definition, flawless composition, stunningly detailed and intricate, octane render, featured on ArtStation, artistic with a photorealistic touch, concept art inspired by Greg Rutkowski, cinematic and atmospheric lighting, hyperrealism, depth of field photography, evokes a sense of timeless beauty, surrounded by a serene landscape with gentle ripples on the water and dappled sunlight filtering through lush trees.