Klaudiush
Interactive 3D civic budget map for the GZM Metropolitan Area. Started as a jury-recognized prototype built in 48 hours at AEC Hackathon Copenhagen 2026, now grown into a platform covering 13 cities and ~3,200 projects, with a metropolitan authority pilot under discussion.
About the project
Klaudiush is a 3D visualization platform that brings civic budget proposals onto an interactive city map, allowing residents to explore investment proposals in their spatial context. The platform aggregates all project information in one place and tracks each project's status — from submission through voting to completion. It works as an overlay on the existing civic budget system, increasing transparency without replacing current tools.
All data is powered by Metropolia GZM's open data portal (otwartedane.metropoliagzm.pl) — civic budget projects, districts, points of interest, and bike routes are pulled from the metropolitan area's public CKAN datasets and synced daily, rather than manually entered.
Live Demo
Update: how the project has grown since the hackathon
Klaudiush didn't stop at the hackathon demo. Here's what changed between the first prototype in March and where it stands now, in July.
-
March 2026 — AEC Hackathon Copenhagen
Built in 48 hours: one city (Gliwice), 21 civic budget projects, pastel 3D map with Google Photorealistic Tiles. Jury-recognized prototype.
-
Late March – early April 2026 — Post-hackathon expansion
Deployed to Vercel with Supabase backend. Scaled from 21 to 157 Gliwice projects (scraped from official GBO 2024 documents), added districts, GDPR-compliant user accounts, and cadastral/population data overlays from Polish government APIs.
-
April 2026 — Metropolia GZM pilot conversation
Presented Klaudiush to Metropolia GZM. Positive reception, with a pilot on the table conditional on three additions:
- Open data integration beyond Gliwice
- Verified national login (PLZ)
- Consultation features — comments, upvoting
-
April – July 2026 — Building the pilot requirements
All three requirements shipped: ingested open civic budget data across all 13 cities of Metropolia GZM (~3,200 projects total), added PLZ verified login, and built comments with admin moderation and upvoting. Also added 2,000+ points of interest and 230+ bike routes, daily automated data sync, and district-level spatial matching.
-
Now (July 2026)
A 13-city civic budget platform with verified login, live data sync, and a metropolitan pilot still under discussion with Metropolia GZM.
AEC Hackathon Copenhagen 2026
The AEC Hackathon is one of the most important international events connecting architecture, engineering, and construction with technology. The Copenhagen edition brought together architects, urban planners, programmers, and smart city specialists from across Europe.
Our team designed and built the Klaudiush prototype in under 48 hours. The concept was recognized by the jury and sparked discussions about civic budgets among hackathon participants and industry experts from companies like Henning Larsen, confirming that the need for digital inclusivity and transparency in participatory processes is universal, and that 3D visualization is a direction that resonates with industry leaders.
Pitch Deck
Problem
Based on the evaluation of Gliwice Civic Budget 2024, four key barriers limit citizen participation:
- Scattered information — project details are hidden in technical documents and PDFs published across many different sites. Residents often don't know where to find data on project status.
- No spatial context — proposals use geodetic reference numbers instead of clear map visualizations. Residents struggle to assess whether an investment affects their neighborhood.
- Poor project monitoring — there is no single, transparent place where residents can track current progress, costs, and responsible entities.
- Low visibility of completed projects — many completed investments remain "anonymous" — residents use infrastructure without knowing it was built through the civic budget.
Solution
Klaudiush directly addresses each of the four problems identified in the GBO evaluation:
- One place for all information — all project data (description, budget, location, status, 3D visualization) collected in a single view. No more searching through multiple websites and PDFs.
- 3D visualization instead of geodetic codes — each project is placed on an interactive 3D city map. Residents immediately see where the investment will be built and how it will change their surroundings.
- Transparent project lifecycle monitoring — the platform tracks every stage: from submission through voting to completion. Residents can check progress, costs, and responsible entities at any time.
- Visibility of completed investments — completed projects remain visible on the map with a "Completed via GBO" label, building trust and inspiring participation in future editions.
Additional value
Comments, discussions, and voting patterns collected on the platform create a qualitative picture of resident preferences across districts. The city gains not just vote counts, but real justification for why certain initiatives are popular — a solid foundation for validating ideas, making better investment decisions, and building trust in the participatory process.
Team
- Adam Bączek — I LO Gliwice graduate. MSc Digital Business, Copenhagen Business School.
- Mikołaj Sapek — I LO Gliwice graduate. MSc Data Science, Copenhagen Business School.
- Maciej Sachse — MSc Architecture, TU Delft.
- Jan Sachse — AI specialist at Asseco.
Tech stack
- React + MapLibre GL JS + deck.gl
- Google Photorealistic 3D Tiles
- Supabase (Postgres + PostGIS, auth, storage)
- PLZ verified national login
- Vercel (hosting, daily CKAN sync via GitHub Actions)
- Open civic budget data — CKAN portal, Metropolia GZM (13 cities)
Hackathon Photos
