"A realistic and luxurious poster design showcasing a high-end restaurant with a central cascading waterfall as a natural and integrated feature. The waterfall flows seamlessly into the decor, surrounded by polished marble floors and walls, with soft ambient lighting creating a warm and inviting glow. The dining area includes modern, elegant furniture with rich textures and subtle golden accents. The color palette blends deep black, gold, and navy blue, emphasizing exclusivity. The overall scene is immersive, highlighting the natural elegance and sophistication of the space."