Design a bathroom in Retro Futuristic style, evoking the nostalgia of 1950s and 60s space age design. The space features a sleek, silver-painted concrete floor and walls, with geometric patterns of turquoise and chrome accents. A curved, chrome-plated sink with a retro-style faucet and a pedestal base stands under a domed, translucent glass ceiling, casting a kaleidoscope of colors on the floor. A built-in, chromed-out shower cubicle with a rounded, flared entrance and a chrome-plated showerhead, suspended from a glowing, fiber-optic "starfield" above, provides a futuristic bathing experience. Walls adorned with retro-style, glow-in-the-dark star stickers and a chromed-out, wall-mounted toilet complete the Retro Futuristic aesthetic, while a collection of vintage sci-fi posters and a retro-style, neon-lit "Galactic Bathroom" sign add to the nostalgic charm.