Show HN: Valencia, Spain in Sim City/Isometric View
This "Show HN" features Tiny València, a stunning isometric pixel-art map of Valencia, Spain, meticulously rendered from real 3D city data in the classic SimCity style. It leverages an image model to transform detailed geographic information into a seamless, charming pixelated landscape, sparking considerable technical curiosity on how such intricate digital cartography is achieved. The project captivates with its blend of nostalgia, technical ingenuity, and local charm, prompting discussions on generative art definitions and urban exploration.
The Lowdown
Tiny València presents an interactive, isometric pixel-art map of the entire municipality of València, Spain, drawing inspiration from SimCity and similar projects like Isometric NYC. This digital rendition is not merely an artistic interpretation but a detailed recreation, with every building faithfully represented from real-world data, all rendered from a consistent isometric angle.
Here's how this intricate digital city comes to life:
- Data Foundation: The map is built upon a rich tapestry of open data sources. Building outlines are sourced from Dirección General del Catastro, aerial photography and terrain from IGN, and critical geographic features like roads, boundaries, and the coastline from OpenStreetMap. For 3D reference, the project utilizes Google Photorealistic 3D Tiles via Cesium ion.
- Artistic Transformation: The core innovation lies in its rendering pipeline. Real 3D city data is first rendered from a fixed isometric camera. This output is then fed into an image model, which has been meticulously trained on a hand-picked pixel-art style. This model repaints the city tile-by-tile, ensuring each piece seamlessly integrates with its neighbors to form a cohesive, pixelated urban fabric.
- Interactive Exploration: Users can navigate the map intuitively by dragging to move, scrolling or pinching to zoom, and double-clicking to zoom in. Handy keyboard shortcuts (R for random, H for whole map, F for fullscreen, / for search, G for play) enhance usability, and the current view is always reflected in the address bar, making sharing specific locations effortless.
- Comprehensive Coverage: The map spans the entire municipal term, from the agricultural huerta to the natural park of Albufera, with only minor exceptions where 3D imagery was unavailable.
Tiny València is a testament to the power of combining geographical data with modern image processing techniques to create a visually engaging and technically impressive experience that invites users to explore a familiar city in an entirely new, nostalgic light.
The Gossip
Technical Tête-à-Tête
Many commenters expressed strong interest in the technical specifics of the project, particularly regarding the image model and the automation pipeline. Users were curious about the base checkpoint, any LoRAs used, and the overall process for transforming 3D data into pixel art. There was a general desire to understand how much manual work was involved versus automated generation, and whether the methodology could be generalized to other cities, showcasing HN's appreciation for behind-the-scenes engineering details.
Pixel Art Purity Police
A spirited debate emerged regarding the classification of the project's aesthetic. One user provocatively argued that AI-generated imagery, even when styled to resemble it, isn't 'pixel art' because it lacks the intentional, pixel-by-pixel creation inherent to the traditional craft. This sparked counter-arguments dismissing such distinctions as gatekeeping and praising the visual outcome regardless of its generation method, highlighting the ongoing tension around AI's role in creative fields.
Valencian Validation & Vexations
Locals and former visitors from Valencia enthusiastically praised the map, sharing their delight in recognizing familiar landmarks and enjoying the included mini-games. While overwhelmingly positive, some offered constructive critiques, such as confusion over the default map orientation, inaccuracies in specific details (like missing fountains or incorrect architectural features), and suggestions for future updates, demonstrating a keen, personal connection to the depicted city.