Explore the world throughout history – and local history, and prehistory. The #TimeMachine of maps, created by people like you and dedicated to the #PublicDomain. Charter project of @OpenStreetMapUS and companion to @openstreetmap.
Learn more: https://osm.wiki/OHM
(Mastodon account run by @jeffme @mxn and bridged as https://bsky.app/profile/ohm.mapstodon.space.ap.brid.gy )
#OpenHistoricalMap #OpenStreetMap #DigitalHumanities #OpenData #HGIS
@awinkler We also have a pretty active forum - https://forum.openhistoricalmap.org/ & Discord channel at OSMWorld Discord - #openhistoricalmap at https://discord.gg/openstreetmap
One other note - we do not use a database license for our freely-available downloads and user submissions default to CC0, although we have some flexibility around that when importing existing datasets.
@awinkler - please check out our wiki - https://wiki.openstreetmap.org/wiki/OpenHistoricalMap/Contributing. That explains the very bare bones basics about OHM, but you can use almost any getting started with O*S*M tutorial, because OHM uses the OSM platform. Everything pretty much works the same way. We do have some differences in recommended tags that enable time (start_date & end_date) and we also highly encourage the sourcing of individual elements (as opposed to changesets...). We'd love to have you there!
And that’s just a couple of the many things we’ve been up to lately. Keep the feedback coming and we’ll see you on the map!
Labels on the map match your preferred language, just like the rest of the site. You can set your preferred language in settings. Now you can understand the map even if you don’t speak a language that was common halfway around the world centuries ago. For mappers, it’s a lot easier to see opportunities to improve our language coverage.
Do you already contribute to @openstreetmap? You can start contributing to OpenHistoricalMap too in just a few clicks, without having to juggle yet another password for yet another mapping site. Once you have a taste of OSM #SingleSignOn via #OAuth2, you’ll never look back.
Just in time for #StateOfTheMapUS next week, we landed some long-awaited features on top of the many other things we quietly released on #OpenHistoricalMap over the past few months. Check out the details on the forum:
⏳ Time is running out! Submit your OSM US Public Service Scholarship application to State of the Map US by midnight ET TONIGHT (Sunday, June 8th)!
Details: https://openstreetmap.us/news/2025/05/sotmus-government-scholarship/
Application: https://docs.google.com/forms/d/e/1FAIpQLSdVFtu9QXYcFYT1WcxQmsUpk-sAXvaG24mg_GdRFdlqm0xdgg/viewform
Applications are open for the OSM US Public Service Scholarship to State of the Map US in Boston! Thanks to all the individuals who donated so far, we've raised enough to invite 4 scholars to Boston.
Learn more: https://openstreetmap.us/news/2025/05/sotmus-government-scholarship/
We’ve never seen such a sharp uptick in new railroad coverage like we’ve experienced in May, particularly in present-day Argentina, Finland, and Mexico.
In the past month, the #OpenHistoricalMap community added 49,939 dated elements, 5,965 buildings, and 293,247¼ railroad miles. The average age of a dated element fell by 14 months, and the average year shifted over 6 months later. All this with the help of 31 new contributors – welcome!
https://wiki.openstreetmap.org/wiki/OpenHistoricalMap/Statistics
@ohm No!!! I always got annoyed mapping OSM because I couldn't save the history of places. Now I have such a place.
@CharliePlett option to import green squares from #OpenHistoricalMap to OpenStreetMap? 😼 #mashup
@CharliePlett option to import green squares from #OpenHistoricalMap to OpenStreetMap? 😼 #mashup
@ShionAmasato Love this example of finding information on old buildings and using OpenHistoricalMap as a place to store that data!
@ShionAmasato Love this example of finding information on old buildings and using OpenHistoricalMap as a place to store that data!
Two new themes have dropped:
For all the #train enthusiasts out there: https://mapcomplete.org/historic_rolling_stock shows a map of historical locomotives and other rolling stock that are permanently placed somewhere - e.g. monuments, in a museum or just abandoned.
https://mapcomplete.org/historic_aircraft is a similar map showing #aircraft , interlinking with #wikidata for the models.
Beware: they are dangerous: they are quite addictive to get everything right...
“Historians use data science to mine the past,” in PNAS, provides an overview of how historians are using computational methods to analyze digitized sources.
These methods become more essential as historians start working with more recent born digital records at scale. https://www.pnas.org/doi/10.1073/pnas.2508428122
@grimalkina Next month’s #StateOfTheMapUS will have a healthy mix of the human and tech sides, both grassroots and institutional, that would be relevant to those in or adjacent to #GIScience. Our friends at @OpenStreetMapUS offer discounts for academic affiliation, and they just started raising funds to hopefully offer scholarships for affected government employees too. https://en.osm.town/@OpenStreetMapUS/114457256592594448
🍎 Happy Teacher Appreciation Day! We have a special offer for educators interested in attending State of the Map US: Use code "TEACHERS-ROCK" on the Academic & Nonprofit Admission ticket option for three days of SotM US for $150!
🔗 https://bit.ly/sotmus2025tix
This code is only valid on May 6, 2025, for the Academic and Nonprofit ticket. A .edu email address is required during registration to take advantage of the discount.
#teacherappreciation #StateoftheMapUS #OpenStreetMap #geography
