(London Poster) Vintage travel poster illustration of London, ultra-detailed aerial cityscape, featuring the London Eye, Big Ben, River Thames, Westminster Bridge, red double-decker buses, classic British architecture, and busy streets, drawn in intricate pen-and-ink linework with retro engraving style, limited color palette of cream, black, and deep red, large bold typography “LONDON” at the top, textured aged paper background, symmetrical composition, highly detailed urban panorama, mid-century tourism poster aesthetic, cinematic perspective, clean vector-like detailing, nostalgic European travel advertisement style, 4k. Prompt : (Singapore Poster) Vintage travel poster illustration of Singapore, highly detailed aerial view of Marina Bay Sands, ArtScience Museum, skyline, waterfront, bridges, and modern city architecture, intricate pen-and-ink engraving style with retro travel poster aesthetics, limited color palette of cream, black, and mustard yellow, bold typography “SINGAPORE” at the top, textured old-paper look, ultra-detailed city panorama, futuristic yet nostalgic atmosphere, clean architectural linework, symmetrical composition, classic tourism advertisement poster, cinematic bird’s-eye perspective, 4k.