Vibrant Marker City Posters

Generate vibrant marker drawing style city posters with a single customizable subject. This prompt creates bold hand-drawn illustrations featuring colorful marker textures, expressive outlines, premium travel poster aesthetics, and detailed architectural artwork. Perfect for landmarks, cities, wall art, print-on-demand, posters, and social media. Designed with a consistent background, full subject visibility, and a professional 1:1 composition.!!