Show HN: Isometric SF – A pixel-art map of the SF Bay Area

Technical Write-up: <a href="https://www.justinchavez.com/blog/isometric-sf-how/" rel="nofollow">https://www.justinchavez.com/blog/isometric-sf-how/</a><p>Hi HN! Showcasing this fun project. I took 1300 square miles of the SF Bay Area from Google Photorealistic 3D Tiles and transformed them into a cohesive pixel map. It's really fun to explore and stumble upon various famous landmarks like Apple Park, Palace of Fine Arts, or UC Berkeley.<p>The technicals involve using Nano Banana 2 to train a Qwen-Image-Edit 2511 LoRA which is used to prototype the style and generation methods. For final map I used Qwen to train a Klein 4B LoRA which reproduced the style at 1/4 of the cost. More details in the blog post.<p>Let me know what you think! I really enjoyed this process of fine-tuning smaller open source models.<p>If I did the map with Nano Banana 2 it would have cost around 7k USD!<p>Credit for the idea goes to Isometric NYC.