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Prompt positivo: Ultra-detailed 8K architectural visualization, eye-level perspective of the “City of Tomorrow” by Eugène Hénard, envisioned in 1910. A visionary multi-level urban landscape unfolds, structured around a complex circulation system divided into layered zones. The city is meticulously organized into multiple levels, featuring underground galleries, rail systems, and designated streets for light vehicles and pedestrians.

Designed to accommodate high volumes of automobiles and emerging transportation technologies, Hénard’s city promotes fluid and efficient mobility through the vertical separation of traffic. Each layer is purpose-built: heavy freight and trains move below ground, while local pedestrian flow and light vehicles operate above.

Above the surface, the façades of buildings are uniformly aligned, creating a harmonious and disciplined urban rhythm. This visual regularity reinforces spatial coherence, blending aesthetics with functional clarity. The architectural massing follows a concentric layout, where radial streets intersect at circular plazas, forming expanding rings that structure the city and optimize movement.

At the city’s periphery rises a defensive wall of tall metallic towers — sleek and futuristic, defining a shimmering perimeter. At the heart stands the monumental Orientation Tower, crowned by a powerful beacon, serving as both visual landmark and aerial navigation guide. The skyline is punctuated by additional towers placed at the corners of major buildings, with four grand towers of distinct architectural character marking the cardinal points.

No specific location is defined; Hénard’s proposal is a universal urban model, adaptable to any modern context. The vision integrates infrastructure and symbol: a city engineered for clarity, direction, and seamless flow.

Beneath the city, vast illuminated tunnels and technical corridors interconnect the buildings, channeling pipelines for vacuum waste removal, compressed air, sterilized and river water, gasoline, liquid air, postal tubes, fresh air circulation, and dense networks of electrical cables.

The urban scene is vibrant with layered motion: cars, trams, trains, and locomotives glide along transport corridors, while in the sky, experimental flying machines float effortlessly — including large airships and lightweight aircraft with horizontal and vertical propellers designed for static suspension.

The rooftops of monumental towers, civic buildings, and aligned skyscrapers are functionally activated — some transformed into lush green gardens, others into mechanical landing platforms capable of lifting or lowering aircraft and automobiles between rooftop and subterranean levels.

Architectural layers of time coexist in Hénard’s vision: preserved historic monuments and classical buildings stand alongside modern vertical towers, reflecting a city that embraces the future without erasing its past.

Rendered with photorealistic materials — exposed steel trusses, aged stone façades, translucent glass canopies, oxidized copper roofs, reflective surfaces, cobblestone textures, radial paving patterns, and industrial lighting — the image captures the proto-futurist elegance and technological ambition of early 20th-century utopian urbanism. Illuminated by natural daylight with soft atmospheric shadows and a subtle mist, the composition conveys a rational yet daring vision of an aeronautically advanced, vertically layered, and symbolically ordered metropolis.

Prompt negativo: low resolution, sci-fi or cyberpunk architecture, neon lights, chaotic city layout, post-apocalyptic elements, fantasy motifs, modern glass skyscrapers, asymmetrical buildings, broken geometry, overgrown vegetation, dark or gloomy lighting.