A massive, mystical castle floating among clouds, its stone towers reaching into a bright blue sky. Flying dragons circle the turrets, and magical runes glow on the stone walls. A waterfall cascades from one side of the castle, disappearing into the mist below. The scene has a dreamlike atmosphere, with golden sunlight filtering through the clouds and lush greenery surrounding the base. Highly detailed fantasy scene, 4K resolution, intricate textures.