Does anyone know a trick to make a fake window illusion ?

I will have to furbish my future home in september, and I'm looking to add original decor. Is there a way to make it look like there's a window that looks out into a cyberpunk city or like in this insta, on above the skies ?

Preferably using a low tech illusion, but I'm open to suggestions 🙂 would be cool if there was the sensation of life, clouds moving, flying cars etc.