Cartopolis, interactive globe-sized 3D world

In plain words

Cartopolis is a networked 3D virtual world that creates a walkable, real-world copy of locations built from open public data. Users can explore detailed 3D maps with buildings, streets, weather, and transit information while communicating with others in the same area. The platform runs in browsers, on desktop, and Android, with detailed coverage currently focused on the Netherlands. Designed for residents, communities, planners, and government officials, it is free, open source, and self-hostable.

written from the facts on this page · September 2026

From the sources

A social map of the real world: see how a place is built, and talk about it with the people who are there. A walkable 3D copy of the real world, built from open public data and shared between everyone looking at it. Runs in the browser, on the desktop and on Android. Free, open source, self-hostable. For residents, communities, municipalities and governments, and planners and architects. Map, sky, weather, routing and the shared world: anywhere on Earth. Register detail (measured buildings and their records, relief, street objects, aerial photos, transit): the Netherlands, plus municipal data where a city publishes it. Elsewhere the ground is flat and buildings come from OpenStreetMap. Each…from code.garage44.eu

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