Cartopolis - Interactive globe-sized 3D world built from open data

Show HN: Cartopolis, interactive globe-sized 3D world

Cartopolis - Interactive globe-sized 3D world built from open data

Cartopolis is a walkable 3D copy of the real world, built from open public data and shared between everyone. Explore buildings with detailed cards showing year built, use, and floor area, all rendered in your browser, desktop, or Android. Chat with others via local proximity voice or text, point at locations, and even script objects. It works anywhere on Earth, with rich register detail in the Netherlands and OpenStreetMap elsewhere. Free, open source, and self-hostable, Cartopolis is perfect for residents, planners, and municipalities.

A social map of the real world: see how a place is built, and talk about it with the people who are there.

More from this day

2026-09-27