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04/09/2025-10/09/2025
Mapterhorn public terrain tiles [1]
Breaking news
- The OpenStreetMap Foundation held its 19th Annual General Meeting on Saturday, September 13, 2025, at 16:00 UTC. Out of 1,836 eligible voters, 683 participated in the election. Roland Olbricht, Brazil Singh, and Daniela Waltersdorfer were elected to the Foundation’s Board. OSMF Members also extended their thanks to outgoing board member Guillaume, recognizing his six years of service on the Board.
Mapping
- LordGarySugar has proposed several new tags to represent the shape of a building’s underside in 3D renderers, aiming to complement the existing Simple 3D Buildings schema.
Mapping campaigns
- The Spanish language podcast Ciudades y Transporte Sustentable (Cities and Sustainable Transport) highlighted how open mapping and community participation are reshaping mobility.
Community
- We first reported about the Duitama (Columbia) college students and professor Leonardo Gutiérrez nine years ago. These OSM Duitama Mapping Stars are still active and have hosted the Trufi Association’s president, showing him their mobility tools based on Trufi.
OpenStreetMap Foundation
- Minh Nguyễn, the OpenStreetMap Foundation’s Core Software Development Facilitator, reported on the UN Open Source Week, held in New York in June 2025, where Sarah Hoffmann and Minh represented OpenStreetMap.
- Grant Slater has published several technical updates on the OpenStreetMap standard layer tile service, including new backend rendering servers in Taiwan to serve the Asian region, and various performance improvements.
Maps
- Paul Norman experimented with converting the Street Spirit map style from Maplibre GL to Glug, a text-based compact markup for Mapbox GL, reducing it from 1842 lines across 47 files to 743 lines across 22 files.
OSM in action
- Marcus Lundblad explained several of the new features in the recent GNOME Maps version 49.0, such as Wikidata-powered metro station symbols and highway shields in the map view, based on the OpenStreetMap Americana code.
Open Data
- [1] Mapterhorn provides pre-prepared public terrain tiles for different European regions to download and use in interactive web map visualisations. Data for the rest of the world can be downloaded using their CLI tool. The tiles are available under a range of licences.
Software
- What’s new on the OpenStreetMap website since July? Various data-related pages load more quickly and reliably, a variety of tag values link to external resources, and alert messages are prettier.
Programming
- As part of the Google Summer of Code 2025, anqixu has published their final report on a project that brings transliteration support to Nominatim’s search results.
- Juicio worked on a project to implement a method for applying lifecycle tagging in the iD editor that is simple, intuitive, and does not interfere with existing tagging practices.
- Rphyrin has developed a set of statistical tools designed to analyse tag usage across specific regions, revealing new insights into both mapping data and the contributors behind it.
Releases
- Martijn Van Exel has released Meet Your Mappers version 1.2, introducing several small features, including a geo-location button, a clear button, and the removal of the OSM authentication process.
- Alexis Lecanu released Baba version 1.17.0, introducing several new features such as a location accuracy indicator on the camera map and improvements to the hand-mode option.
Did you know that …
- … the Geo URI Handler extension for Firefox will allow you to add a site (like openstreetmap.org) that will open when you click on a geo: link?
- … there are OpenStreetMap IRC channels on irc.openstreetmap.org?
- … the Lokjo online map shows the information about points of interest independent of their marketing budget?
- … about Overpass-turbo StreetView, a Firefox and Chrome extension that adds links to street-level imagery and other mapping services to OSM object popups?
OSM in the media
- Mastodon user Shiyata shared
a story about a path that was made accessible thanks to a disabled woman who fought for its creation. Although officials named it after a national figure, locals crafted and put up their own sign with her name on it, and Shiyata rejoiced that on OSM it is her name that appears rather than the official one.
a story about a path that was made accessible thanks to a disabled woman who fought for its creation. Although officials named it after a national figure, locals crafted and put up their own sign with her name on it, and Shiyata rejoiced that on OSM it is her name that appears rather than the official one.Other “geo” things
- Aaron Koelker has showcased several maps that he created for fun.
- Lubika Brechtel, of Alpin, reported ► that two hikers used ChatGPT to plan their route to the Schmalhorn peak, in the Allgäu Alps, but they ended up in distress and had to be rescued, with one of them suffering a panic attack. Instead of the usual starting point in Einödsbach, ChatGPT directed the hikers to begin in Spielmannsau, east of the mountain.
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Upcoming Events
| Country | Where | Venue | What | When |
|---|---|---|---|---|
 | Virtual | Mapatón Nacional de México 2025  | 2025-08-19 – 2025-09-30 | |
 | Online | OpenStreetMap Midwest Meetup | 2025-09-12 | |
| OSM World Mappy Hour | 2025-09-12 | |||
 | Tours | Étape 84 | Rencontre locale Touraine | 2025-09-12 |
 | København | Cafe Mellemrummet | OSMmapperCPH | 2025-09-14 |
 | Delhi | Panchsheel Park Metro Station | 22nd OSM Delhi MapWalk | 2025-09-14 |
 | Bistro du Châtelet, Rue du Châtelet 4, Habay | Ardenne belge – Social | 2025-09-15 | |
 | 臺北市 | MozSpace Taipei | OpenStreetMap x Wikidata Taipei #80 | 2025-09-15 |
| Rue du Châtelet 6, Habay-la-Neuve | Ardenne belge – Meeting | 2025-09-15 | |
 | Catania | Catania | 2025 Catania Mapathon | 2025-09-16 |
| Missing Maps London: (Online) Mid-Month Mapathon [eng] | 2025-09-16 | |||
| Lyon | Tubà | Réunion du groupe local de Lyon | 2025-09-16 |
 | Bonn | Dotty’s | 192. OSM-Stammtisch Bonn | 2025-09-16 |
| Online | Lüneburger Mappertreffen | 2025-09-16 | |
 | Girona | Facultat de Lletres i de Turisme | Jornadas de SIG Libre / SOTM España | 2025-09-17 – 2025-09-18 |
 | Lima | Microsoft Teams (Remote) | Mapping Party Semanal LATAM Weekly LATAM Mapping Party | 2025-09-17 |
| Karlsruhe | Chiang Mai | Stammtisch Karlsruhe | 2025-09-17 |
 | Stainach-Pürgg | Online | 18. Österreichischer OSM-Stammtisch (online) | 2025-09-17 |
| [Online] Map-py Wednesday | 2025-09-18 | |||
| Ninkasi, 15, impasse du Rond Point, 69210 Saint-Ro | Réunion du groupe local de Vienne | 2025-09-18 | |
| Kiel | KITZ | OSM-Infostand bei den Kieler Linuxtagen | 2025-09-19 – 2025-09-20 |
| OSMF Engineering Working Group meeting | 2025-09-19 | |||
| Torreón | Universidad Autónoma de La Laguna | Mapeo con OpenStreetMap | 2025-09-19 – 2025-09-20 |
| Essen | Linuxhotel Essen | FOSSGIS-OSM-Communitytreffen im Linuxhotel | 2025-09-19 – 2025-09-21 |
| Bengaluru | NIMHANS Convention Centre | OSM India @ IndiaFOSS 2025 | 2025-09-19 – 2025-09-20 |
| Parma | Parma | 2025 Parma Mapping party | 2025-09-20 |
 | Cork | Digital Arts and Humanities Learning Space @ UCC | OpenStreetMap Ireland Annual General Meeting | 2025-09-20 |
 | Atomic Cafe | Social Mapping Sunday: South Perth Foreshore | 2025-09-21 | |
| Trento | Impact Hub Trento | 2025 Trento Mapathon | 2025-09-21 |
| Missing Maps : Mapathon en ligne – CartONG [fr] | 2025-09-22 | |||
 | London | Meta London Office | HOT/Missing Maps London In-Person Mapathon | 2025-09-23 |
| Hamburg | Hamburg | Hamburger Mapping Spaziergang | 2025-09-23 |
| City of Edinburgh | The Guildford Arms | OSM Edinburgh pub meetup | 2025-09-23 |
| Berlin | Online | OSM-Verkehrswende #70 | 2025-09-23 |
| Fabrique des possibles | Réunion OpenStreetMap | 2025-09-24 | |
| TRACK Brussels | FOSS4G Belgium | 2025-09-25 | |
| [Online] OpenStreetMap Foundation board of Directors – public videomeeting | 2025-09-25 | |||
| Hannover | Kuriosum | OSM-Stammtisch Hannover | 2025-09-25 |
| UN Mappers Mappy Hour | 2025-09-26 | |||
| Düsseldorf | Online bei https://meet.jit.si/OSM-DUS-2025 | Düsseldorfer OpenStreetMap-Treffen (online) | 2025-09-26 |
 | Universidad Nacional de Luján | Encuentro de la Comunidad de OpenStreetMap de Argentina | 2025-09-27 – 2025-09-28 | |
| Metz | L’Arob@ase | Atelier du groupe local de Metz – Septembre 2025 | 2025-09-27 |
| Gurgaon | DLF Phase 1 Metro Station | 23rd OSM Delhi MapWalk | 2025-09-28 |
Note:
If you like to see your event here, please put it into the OSM calendar. Only data which is there, will appear in weeklyOSM.
This weeklyOSM was produced by MatthiasMatthias, PierZen, Raquel Dezidério Souto, Strubbl, Ted Johnson, Andrew Davidson, TrickyFoxy, barefootstache, mcliquid.
We welcome link suggestions for the next issue via this form and look forward to your contributions.