OpenHistoricalMap
@openhistoricalmap.org
Explore the world throughout time, mapped in minute detail by people like you & dedicated to the public domain. OHM is a charter project of @osmus.bsky.social and cousin of @openstreetmap.bsky.social. #oldmaps #dh #hgis
https://www.openhistoricalmap.org
https://www.openhistoricalmap.org
Reposted by OpenHistoricalMap
This summer, investigations unearthed evidence that a hillfort in Dumfries & Galloway may have been besieged by an invading Roman force 1,900 years ago ⚔️
Experts say the new data from Burnswark Hill "challenges long-held assumptions about Scotland’s past": www.digitscotland.com/five-of-scot...
Experts say the new data from Burnswark Hill "challenges long-held assumptions about Scotland’s past": www.digitscotland.com/five-of-scot...
January 5, 2026 at 2:03 PM
This summer, investigations unearthed evidence that a hillfort in Dumfries & Galloway may have been besieged by an invading Roman force 1,900 years ago ⚔️
Experts say the new data from Burnswark Hill "challenges long-held assumptions about Scotland’s past": www.digitscotland.com/five-of-scot...
Experts say the new data from Burnswark Hill "challenges long-held assumptions about Scotland’s past": www.digitscotland.com/five-of-scot...
In December, the #OpenHistoricalMap community added 55,351 dated elements, 13,877 buildings, and 8,959 railroad miles. The average age of a dated element fell by 8 months, and the average year shifted one year later. All this with the help of 31 new contributors – welcome!
osm.wiki/OHM/Statistics
osm.wiki/OHM/Statistics
OpenHistoricalMap/Statistics - OpenStreetMap Wiki
wiki.openstreetmap.org
January 1, 2026 at 9:39 AM
In December, the #OpenHistoricalMap community added 55,351 dated elements, 13,877 buildings, and 8,959 railroad miles. The average age of a dated element fell by 8 months, and the average year shifted one year later. All this with the help of 31 new contributors – welcome!
osm.wiki/OHM/Statistics
osm.wiki/OHM/Statistics
The biggest developments in #OpenHistoricalMap tech over the past 6 months 🧵
forum.openhistoricalmap.org/t/staying-af...
forum.openhistoricalmap.org/t/staying-af...
Staying afloat, Wikimedia logins, ancient writing, and more
In the half a year since we started letting you log in using your OpenStreetMap account, localize map labels into your language, and more, our development team has been busier than ever. Keeping the ...
forum.openhistoricalmap.org
January 1, 2026 at 9:28 AM
The biggest developments in #OpenHistoricalMap tech over the past 6 months 🧵
forum.openhistoricalmap.org/t/staying-af...
forum.openhistoricalmap.org/t/staying-af...
Reposted by OpenHistoricalMap
Our latest bi-annual Newsletter, Issue 101, has just been published, containing articles on "Ordeal & Triumph: Middle Temple at War" and "Mapping London and the world’s history with OpenHistoricalMap".
Read it here: publuu.com/flip-book/86...
Read it here: publuu.com/flip-book/86...
LTS No 101 (November 2025)
Online Flipbook created with Publuu Flipbook Maker.
publuu.com
November 27, 2025 at 1:10 PM
Our latest bi-annual Newsletter, Issue 101, has just been published, containing articles on "Ordeal & Triumph: Middle Temple at War" and "Mapping London and the world’s history with OpenHistoricalMap".
Read it here: publuu.com/flip-book/86...
Read it here: publuu.com/flip-book/86...
Reposted by OpenHistoricalMap
Just added my first object to OpenHistoricalMap: the Mississippian and later Cherokee town of Toqua.
#NativeSoutheast
#NativeSoutheast
![Open Historical Map interface showing a region in eastern Tennessee at 1707 CE.
Title highlights: Node: Toqua [950 – 1819]
Toqua (Cherokee: ᏙᏉ, romanized: Toquo) was a prehistoric and historic Native American site in Monroe County, Tennessee, located in the Southeastern Woodlands. Toqua was the site of a substantial ancestral town that thrived during the Mississippian period (1000-1600 CE).
Added prehistoric Native American and Cherokee town
Edited 2 minutes ago by Carwil
Changeset #207314 0
Location: 35.5658732, -84.1696025](https://cdn.bsky.app/img/feed_thumbnail/plain/did:plc:5qmblzn6nfuonk6iiml6i4ku/bafkreie7clip2nzt7x7sw6cbofbplixfn3mt4hoo7qthyk3loutd3ovrfy@jpeg)
December 2, 2025 at 3:59 PM
Just added my first object to OpenHistoricalMap: the Mississippian and later Cherokee town of Toqua.
#NativeSoutheast
#NativeSoutheast
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 35 new contributors – welcome!
osm.wiki/OHM/Statistics
osm.wiki/OHM/Statistics
OpenHistoricalMap/Statistics - OpenStreetMap Wiki
wiki.openstreetmap.org
December 1, 2025 at 3:56 PM
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 35 new contributors – welcome!
osm.wiki/OHM/Statistics
osm.wiki/OHM/Statistics
Props to @timetravel628.bsky.social for a gorgeous new way to explore the OpenHistoricalMap’s coverage of #HistoricBoundaries!
The History of the World - Part Three
You wait an age for a global history map, and then three arrive at once.
googlemapsmania.blogspot.com/2025/11/the-...
You wait an age for a global history map, and then three arrive at once.
googlemapsmania.blogspot.com/2025/11/the-...
The History of the World Map
Maps Mania is a blog dedicated to tracking the very best digital interactive maps on the internet and the tools used to create them.
googlemapsmania.blogspot.com
December 1, 2025 at 7:06 AM
Props to @timetravel628.bsky.social for a gorgeous new way to explore the OpenHistoricalMap’s coverage of #HistoricBoundaries!
Reposted by OpenHistoricalMap
By request, here's a thread of books that I think make excellent gifts this holiday season (obviously they're cartographically inclined, you know me)
1. Best anthology
"All Over the Map" by Betsy Mason and Greg Miller
A gorgeous, full color history of maps mind-bending maps from around the world.
1. Best anthology
"All Over the Map" by Betsy Mason and Greg Miller
A gorgeous, full color history of maps mind-bending maps from around the world.
November 21, 2025 at 7:35 PM
By request, here's a thread of books that I think make excellent gifts this holiday season (obviously they're cartographically inclined, you know me)
1. Best anthology
"All Over the Map" by Betsy Mason and Greg Miller
A gorgeous, full color history of maps mind-bending maps from around the world.
1. Best anthology
"All Over the Map" by Betsy Mason and Greg Miller
A gorgeous, full color history of maps mind-bending maps from around the world.
Our 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 about 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 for your patience.
November 18, 2025 at 5:32 PM
Our 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 about 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 for your patience.
It was a privilege to introduce the software #internationalization and #localization community to #OpenHistoricalMap (and #OpenStreetMap and @maplibre.org) at #UTW2025. Join us in mapping yesterday already!
#i18n #l10n
#i18n #l10n
November 13, 2025 at 7:10 PM
It was a privilege to introduce the software #internationalization and #localization community to #OpenHistoricalMap (and #OpenStreetMap and @maplibre.org) at #UTW2025. Join us in mapping yesterday already!
#i18n #l10n
#i18n #l10n
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!
osm.wiki/OHM/Statistics
osm.wiki/OHM/Statistics
OpenHistoricalMap/Statistics - OpenStreetMap Wiki
wiki.openstreetmap.org
November 6, 2025 at 8:32 AM
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!
osm.wiki/OHM/Statistics
osm.wiki/OHM/Statistics
Anyone mapping the history of the German Autobahn? We have a particularly fleißig mapper who has set up a project for the daunting task of mapping the historical evolution of die Bundesautobahn & he's off to a great start...
#HGIS #OpenStreetMap #OpenHistoricalMap #DH #Germany #Highways #History
#HGIS #OpenStreetMap #OpenHistoricalMap #DH #Germany #Highways #History
November 5, 2025 at 12:43 AM
Anyone mapping the history of the German Autobahn? We have a particularly fleißig mapper who has set up a project for the daunting task of mapping the historical evolution of die Bundesautobahn & he's off to a great start...
#HGIS #OpenStreetMap #OpenHistoricalMap #DH #Germany #Highways #History
#HGIS #OpenStreetMap #OpenHistoricalMap #DH #Germany #Highways #History
Reposted by OpenHistoricalMap
The breakage from last week is now fixed. You can once again use the map in any language and preview tagged images and Wikipedia articles in the sidebar. Please let us know if you continue to see any issues.
October 29, 2025 at 10:18 PM
The breakage from last week is now fixed. You can once again use the map in any language and preview tagged images and Wikipedia articles in the sidebar. Please let us know if you continue to see any issues.
Reposted by OpenHistoricalMap
Secret Maps opens today! 🤫 🗺️
From medieval manuscripts to Cold War espionage, our new exhibition explores how maps have hidden as much as they revealed for over 600 years.
Book now: bit.ly/BLSecretMaps
From medieval manuscripts to Cold War espionage, our new exhibition explores how maps have hidden as much as they revealed for over 600 years.
Book now: bit.ly/BLSecretMaps
October 24, 2025 at 12:26 PM
Secret Maps opens today! 🤫 🗺️
From medieval manuscripts to Cold War espionage, our new exhibition explores how maps have hidden as much as they revealed for over 600 years.
Book now: bit.ly/BLSecretMaps
From medieval manuscripts to Cold War espionage, our new exhibition explores how maps have hidden as much as they revealed for over 600 years.
Book now: bit.ly/BLSecretMaps
Any Australian OHM mappers out there? This seems like a great complement to our efforts that might benefit from an improved 1970s Melbourne basemap!
#Australia #DH #PastMapping
#OpenStreetMap #Melbourne
#Australia #DH #PastMapping
#OpenStreetMap #Melbourne
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]
[Original post on hcommons.social]
October 24, 2025 at 6:32 PM
Any Australian OHM mappers out there? This seems like a great complement to our efforts that might benefit from an improved 1970s Melbourne basemap!
#Australia #DH #PastMapping
#OpenStreetMap #Melbourne
#Australia #DH #PastMapping
#OpenStreetMap #Melbourne
We’re aware that the map on our homepage is currently nonfunctional in some languages. If you are seeing this issue, please switch the interface to English for now. Thank you for your patience.
forum.openhistoricalmap.org/t/broken-hom...
forum.openhistoricalmap.org/t/broken-hom...
Broken homepage map (in some languages) and inspector images
The map on the homepage is currently nonfunctional in some languages. If you are seeing this issue, please switch the interface to English for now. To change your interface language, click the 文A butt...
forum.openhistoricalmap.org
October 22, 2025 at 10:29 PM
We’re aware that the map on our homepage is currently nonfunctional in some languages. If you are seeing this issue, please switch the interface to English for now. Thank you for your patience.
forum.openhistoricalmap.org/t/broken-hom...
forum.openhistoricalmap.org/t/broken-hom...
Reposted by OpenHistoricalMap
The Irish Railway System between 1920 and 2020, name a bigger downgrade in history.
Why it happened: brilliantmaps.com/irish-rai...
Why it happened: brilliantmaps.com/irish-rai...
October 21, 2025 at 4:01 PM
The Irish Railway System between 1920 and 2020, name a bigger downgrade in history.
Why it happened: brilliantmaps.com/irish-rai...
Why it happened: brilliantmaps.com/irish-rai...
Had a great time presenting about how OHM & Wikimedia can be used together at #WikiconferenceNA. The focus of my 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. #DH /1
October 19, 2025 at 7:04 PM
Had a great time presenting about how OHM & Wikimedia can be used together at #WikiconferenceNA. The focus of my 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. #DH /1
Reposted by OpenHistoricalMap
The second day of Wikiconference North America 2025 kicks off today with an enlightening and highly entertaining talk with longtime Wikipedia champion @craignewmark.bsky.social and @depthsofwikipedia.bsky.social. Follow along as we post updates today! #wikiconferenceNA
October 18, 2025 at 2:55 PM
The second day of Wikiconference North America 2025 kicks off today with an enlightening and highly entertaining talk with longtime Wikipedia champion @craignewmark.bsky.social and @depthsofwikipedia.bsky.social. Follow along as we post updates today! #wikiconferenceNA
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.)
October 16, 2025 at 11:45 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.)
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 6:38 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
Reposted by OpenHistoricalMap
Nicely done!
Here's the tutorial 👉 youtu.be/JfDW8P51MmA
Here's the tutorial 👉 youtu.be/JfDW8P51MmA
October 10, 2025 at 6:36 PM
Nicely done!
Here's the tutorial 👉 youtu.be/JfDW8P51MmA
Here's the tutorial 👉 youtu.be/JfDW8P51MmA
In September, 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 mappers – welcome!
osm.wiki/OHM/Statistics
osm.wiki/OHM/Statistics
OpenHistoricalMap/Statistics - OpenStreetMap Wiki
wiki.openstreetmap.org
October 8, 2025 at 7:34 AM
In September, 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 mappers – welcome!
osm.wiki/OHM/Statistics
osm.wiki/OHM/Statistics
October 3, 2025 at 6:30 AM