Vintage London travel poster illustration

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.