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OpenHistoricalMap
@ohm.mapstodon.space.ap.brid.gy
Explore the world throughout history – and local history, and prehistory. The #TimeMachine of maps, created by people like you and dedicated to the #PublicDomain […]

[bridged from https://mapstodon.space/@ohm on the fediverse by https://fed.brid.gy/ ]
In November, the #openhistoricalmap community added 62,421 dated elements, 21,441 buildings, and 8,072½ railroad miles. The average age of a dated element fell by 17 months, and the average year shifted one year later. All this with the help of 40 new contributors – welcome! […]
Original post on mapstodon.space
mapstodon.space
December 1, 2025 at 3:55 PM
RE: https://mapstodon.space/@mapsmania/115617207189840155

A gorgeous new way to explore OpenHistoricalMap’s coverage of #historicboundaries
mapstodon.space
December 1, 2025 at 7:42 AM
Reposted by OpenHistoricalMap
What sorts of things do georeferenced maps make possible? This interface turns a street address into a point, finds georeferenced maps from the SLV that include that point, then displays the historic maps with a marker showing the location of the modern address. #slvresidency
November 23, 2025 at 3:50 AM
The OpenHistoricalMap database will be in read-only mode for a planned upgrade next Monday, November 24, at 19:00 UTC. We expect the upgrade to take approximately 3 hours. During that time, you won’t be able to save any changes, but you’ll be able to view and query the map as usual. Thank you […]
Original post on mapstodon.space
mapstodon.space
November 18, 2025 at 5:31 PM
Reposted by OpenHistoricalMap
There's a new version of the AllMaps editor out, which means I'll need to update my SLV georeferencing documentation! It works the same, but some things have been moved or added. Now includes a 'search' option in the georefencing panel that should make it easier to match maps.
November 12, 2025 at 11:57 PM
It was a privilege to introduce the software #internationalization and #localization community to #openhistoricalmap (and #OpenStreetMap and @maplibre) at #utw2025. Join us in mapping yesterday already!

#i18n #l10n
November 13, 2025 at 7:07 PM
In October, the #openhistoricalmap community added 87,784 dated elements, 28,666 buildings, and 15,202½ railroad miles. The average age of a dated element fell by 15 months, and the average year shifted one year later. All this with the help of 40 new contributors – welcome! […]
Original post on mapstodon.space
mapstodon.space
November 6, 2025 at 8:32 AM
Anyone mapping the history of the German Autobahn? We have a particularly fleißig mapper who's coordinating the daunting task of mapping the historical evolution of die Bundesautobahn.

He's off to a great start... and he'd love to have helpers. Maybe, just […]

[Original post on mapstodon.space]
November 5, 2025 at 12:59 AM
Reposted by OpenHistoricalMap
New prototype from my #slvresidency! This one lets you explore photos from the Committee for Urban Action collection by selecting one of the highlighted roads on a map of Victoria. It's very much work-in-progress and will probably change a lot, but you can […]

[Original post on hcommons.social]
October 20, 2025 at 6:57 AM
Had a great time presenting about how OHM & #wikimedia can be used together at @WikiConferenceNA. The focus of our talk was on how OHM data's tagging can include to add source information not just for geometry, but also for attributes, and that all of this is easily downloadable for reuse […]
Original post on mapstodon.space
mapstodon.space
October 19, 2025 at 10:05 PM
If you’re in #loouhvull for #nacis #nacis2025, look out for these OpenHistoricalMap stickers. Snag one and keep it real! (For the record, we have a scale bar too.)

#realmapshavetimesliders
October 16, 2025 at 11:42 PM
We've set up some new networking rules on our sites, so if you're seeing any 503 or other errors, please DM and we'll fix things up! #notyoubots
October 10, 2025 at 6:39 PM
In the past five weeks, the #openhistoricalmap community added 78,430 dated elements, 10,580 buildings, and 20,439¼ railroad miles. The average age of a dated element fell by 21 months, and the average year shifted 17 months later. All this with the help of 30 new contributors – welcome! […]
Original post on mapstodon.space
mapstodon.space
October 8, 2025 at 7:32 AM
Mabuhay @sotm! If you’re in Manila for #sotm #sotm2025, come find @mxn for some troublemaker’s stickers!
October 3, 2025 at 6:28 AM
¡Muchísimas gracias a @osmlatam por la oportunidad de introducir #openhistoricalmap a los mapeadores latinoamericanos con la charla por @rub21 y @mxn en #sotmlatam #sotmlatam2025 el sábado pasado! ¡Agradecemos el entusiasmo de todos y esperamos contar la geohistoria juntos! […]
Original post on mapstodon.space
mapstodon.space
September 13, 2025 at 5:32 PM
¡Buenas días de #Medellín y #sotmlatam #sotmlatam2025! ¡Agradecemos a encontrar todos los mapeadores aquí! @rub21 y @mxn van a presentar sobre la tema de #openhistoricalmap el sábado.
September 5, 2025 at 4:18 PM
In the past month, the #openhistoricalmap community added 71,946 dated elements, 12,256 buildings, and 10,475¾ railroad miles. The average age of a dated element fell by 13 months, and the average year shifted 4 months later. All this with the help of 30 new contributors – welcome! […]
Original post on mapstodon.space
mapstodon.space
September 1, 2025 at 11:37 PM
Clues about history are never far if you know what to look for. Neither is @vespucci_editor. With its new support for editing OpenHistoricalMap, you can jot down what you learn from a #cornerstone #plaque #sidewalkstamp or the impressions left by #abandonedrailways right on the spot while on a […]
Original post on mapstodon.space
mapstodon.space
August 27, 2025 at 2:27 AM
Ian Spangler gives an overview of the map resources at @bplmaps and tools for turning them into geodata:

https://openstreetmap.us/events/state-of-the-map-us/2025/urban-atlases-library-collections-and-historical-geodata/

#stateofthemapus #sotmus
Urban atlases, library collections, and historical geodata
openstreetmap.us
August 19, 2025 at 7:08 PM
Reposted by OpenHistoricalMap
The South Bay is looking a little busier in #openhistoricalmap. @impiaaa imported comprehensive historical coverage of #trafficlights from #sanjose #dot. Now you can tell when major streets were built based on when the traffic lights came on […]

[Original post on sfba.social]
August 14, 2025 at 2:13 AM
Whether you go big or go small, you can’t map it all. But you can lay a foundation to grow and guide a new historical mapping community. @mxn mixes as many metaphors as possible to show us how:

https://www.youtube.com/watch?v=5h3y5GnkJEY

#stateofthemapus #sotmus
August 11, 2025 at 9:14 PM
We’re aware of a performance issue affecting history pages since we deployed a new version of the website last week. Our developers have identified the cause and are working on a fix. Thank you for your patience.

https://github.com/OpenHistoricalMap/issues/issues/1111
Hovering over result in sidebar reloads map and time slider · Issue #1111 · OpenHistoricalMap/issues
Hovering over any result in the sidebar reloads the map and time slider. This happens on the history page per #1107 (comment) but also in search and query results. You can see the time slider’s ran...
github.com
August 6, 2025 at 8:42 AM
In the past month, the #openhistoricalmap community added 55,883 dated elements, 13,636 buildings, and 19,387¼ railroad miles. The average age of a dated element fell by 13 months, and the average year shifted 5 months later. All this with the help of 29 new contributors – welcome! […]
Original post on mapstodon.space
mapstodon.space
August 4, 2025 at 8:03 AM