OpenHistoricalMap

ohm@mapstodon.space

Explore the world throughout history – and local history, and prehistory. The <a href="https://mapstodon.space/tags/TimeMachine" class="mention hashtag" rel="tag">#TimeMachine</a> of maps, created by people like you and dedicated to the <a href="https://mapstodon.space/tags/PublicDomain" class="mention hashtag" rel="tag">#PublicDomain</a>. Charter project of <a href="https://en.osm.town/@OpenStreetMapUS" class="u-url mention">@OpenStreetMapUS</a> and companion to <a href="https://en.osm.town/@openstreetmap" class="u-url mention">@openstreetmap</a>.Learn more: <a href="https://osm.wiki/OHM" target="_blank" rel="nofollow noopener" translate="no">

Posts

Post #3861020
Animated railway map within the former Kingdom of #Wurttemberg from 1845 to 2025, courtesy of Bauer33333 https://commons.wikimedia.org/wiki/File:Entwicklung_der_Eisenbahnen_in_W%C3%BCrttemberg.webm
Post #2261015
In April, the #OpenHistoricalMap community added 137,660 dated elements, 106,732 buildings, and 37,220¼ railroad miles. The average age of a dated element fell by almost 2 years, and the average year shifted 17 months later. All this with the help of 36 new contributors – welcome! https://wiki.openstreetmap.org/wiki/OpenHistoricalMap/Statistics
Post #1052487
RE: https://en.osm.town/@osm_tech/115968544599864782 This 😣
Post #1052486
In January, the #OpenHistoricalMap community added 65,731 dated elements, 9,668 buildings, and 15,303½ railroad miles. The average age of a dated element rose by more than 7 years, and the average year shifted more than 4 years earlier. All this with the help of 39 new contributors – welcome! https://wiki.openstreetmap.org/wiki/OpenHistoricalMap/Statistics
Post #1052484
All OpenHistoricalMap websites and APIs will be down for approximately 30 minutes this Thursday from 15:00 UTC for a planned server configuration change to improve site reliability. We apologize for the inconvenience.
Post #1052483
Help us make 2026 an historic year by participating in our first-ever donation drive! Your generous donation will go directly toward making #OpenHistoricalMap easier to use and contribute to and ensure that our services remain available and reliable as demand increases. Find out more about the #fundraiser and our plans for 2026 on the forum: https://forum.openhistoricalmap.org/t/donate-for-an-historic-2026/678 #donate
Post #1052482
A proof of concept for OpenHistoricalMap Americana simulates a road atlas at any point in the history of highway construction. Tour down #Route66 and the other highways that existed at the time. https://openstreetmap.us/events/mapping-usa/2026/history-hits-the-road/ https://forum.openhistoricalmap.org/t/openhistoricalmap-americana/667 #MappingUSA #roadgeek
Post #1052481
Mappers in or of North America, join us on March 4 for a #MappyHour hosted by @OpenStreetMapUS. RSVP today: https://openstreetmap.us/events/mappy-hours/2026/03/ohm-north-america/
Post #1052480
In February, the #OpenHistoricalMap community added 47,171 dated elements, 5,175 buildings, and 7,924¾ railroad miles. The average age of a dated element fell by 10 months, and the average year shifted 5 months later. All this with the help of 43 new contributors – welcome! https://wiki.openstreetmap.org/wiki/OpenHistoricalMap/Statistics
Post #1052479
Oops! #OpenHistoricalMap was supposed to be a map of history, but then the linguists found us and turned us into an accidental map of the history of writing. @mxn shows how we and @maplibre are bringing #HGIS to more language traditions all over the world: Recording: https://www.youtube.com/watch?v=xoqwUHvYsrs Slides: https://commons.wikimedia.org/wiki/File:An_Accidental_Map_of_the_History_of_Writing.pdf #UTW2025 #internationalization
Post #1052478
Community members are scheduled to present at events in at least four countries in the next few months. Our event calendar has never looked so international! 🇦🇹 🇩🇪 🇺🇸 🇲🇽 https://wiki.openstreetmap.org/wiki/OpenHistoricalMap/Events Are you interested in name-dropping #OpenHistoricalMap in an upcoming conference talk, organizing a historical mapathon, or live-streaming your editing session? Let us know! We’ll help get the word out and share ideas for making it a success.
Post #1052477
In March, the #OpenHistoricalMap community added 643,241 dated elements, 18,358 buildings, and 5,816½ railroad miles. The average age of a dated element fell by 24 years, and the average year shifted 17 years later. All this with the help of 28 new contributors – welcome! https://wiki.openstreetmap.org/wiki/OpenHistoricalMap/Statistics
Post #379235
Our friends at @developmentseed are always working on clever tooling that makes it possible to sustain an ambitious community-driven project like ours. Watch Hanbyul Jo’s rundown at #StateOfTheMapUS: https://www.youtube.com/watch?v=3xdm3I_5v10