OpenHistoricalMap
Im starting to map narrow gauge railroads more correctly because from what I see most railroads in East Prussia are mapped so I wanted to find some Russian, Lithuanian railway nerds and German as well to help me out in translations as well one of my questions is what’s the best site like bazakolejowa here for checking all the information about Kaliningrad Oblast in particular since its such a mess
Leander, TX 78641 USA
In the 10th Century, the Kingdom of Francia is divide by 3 country: West, Middle and East Francia. But I don’t see it in OHM. Anyone can add it? Country need to add and edit: 1. West Francia 2. Middle Francia 3. East Francia 4. Holy Roman Empire 5. German Reich in 1942 has invaded Netherlands and Belgium
While mapping the British Empire (completed in early 2025) I had mapped almost all of New Spain in the process. So I immediately started mapping the rest of the Spanish Empire in South America and the Pacific.
Then I took a break for awhile and concentrated on roads and railroads in Mexico and Belize. Last week I did some fixes and cleanups on the Spain relation and then tonight I completed the Spanish Empire.
Spanish Empire
Spain
Viceroyalty of Peru
Viceroyalty of the Indies
Viceroyalty of New Spain
Viceroyalty of the Rio de la Plata
Viceroyalty of New Granada
Captaincy General of Guatemala
Captaincy General of the Philippines
Captaincy General of Cuba
Captaincy General of Chile
Captaincy General of Venezuela
Captaincy General of Santo Domingo
Captaincy General of Puerto Rico
Captaincy General of the Yucatan
Discovered this new mapping site and checking it out. Not very useful YouTube videos out there on just the basic functionality of how to do things. Started off using Google Earth, then switched over the QGIS. Will give this a try and see how it does.
Some historical-geographical online resources for Slovenia, my main area of contribution:
Vector tiles API: https://vtiles.openhistoricalmap.org/
One of the most frequently added data types in OpenHistoricalMap are boundaries. These are often represented as relations and ways, these relations are imported into the PostGIS tiler database. Many of these polygons are quite complex, sometimes covering entire countries or continents and for each relation/way, a polygons are generated.
In the previous version, vector tiles were generated directly from raw boundary geometries. This method resulted in slower tile response times and significantly larger tile sizes, particularly when handling complex or high-resolution polygons.
We use PostGIS’s ST_AsMVTGeom function to generate vector tiles. When working with ST_AsMVTGeom and complex, global-scale geometries—especially those with thousands of vertices—the clipping process (cutting to the !BBOX!) can introduce significant computational overhead. This becomes especially problematic at lower zoom levels, where a single geometry may span multiple tiles, triggering expensive intersection and transformation operations.
Over time, many users began noticing that tiles were loading too slowly, particularly in regions with dense boundary data. This performance bottleneck in the boundaries layer also negatively impacted the loading speed of other map layers, resulting in an overall degraded map experience.
📎 From: GitHub Issue #800
To address the previous version of the tiler, we conducted a detailed analysis of the boundary data and implemented a merging strategy.
江戸時代の都市はどこまでをplace=cityと見做すべきなんだろう… 城がある・五街道の宿と色々考えられるけど何処ら辺までplace=cityなのか？ 宇都宮城下と宇都宮宿は同じ都市として見做すのか？
Attempting to collect the most accurate historical maps of Middle Georgia.
I found something interesting while working on mapping historical streets in my hometown of Cincinnati. Take a look at Alexander St on J.H. Colton & Co.’s 1855 map, the oldest map I’m aware of that includes the street:
Here’s how S. Augustus Mitchell depicted Alexander St on his 1860 map:
I started mapping on OpenHistoricalMap in 2019 because of things I had to erase on OpenStreetMap that I wanted recorded for histories sake.
In August 2024 I mapped the boundaries of Central America. Then I read on the forum about a project to map the HRE. I thought of helping, but I didn’t really know much about mapping large relations yet, so instead I opted to start mapping the British Empire.
So from September 2024 - February 6 2025 I spent a crazy amount of time researching the boundaries and border changes of the British colonies. I created a spreadsheet to generate the tags for the relations and another formula to generate the chronologies. This made it very easy and efficient to map the Empire.
In the process of mapping the British Empire I’ve almost completely mapped the other European empires, the Spanish, Dutch and French empires. I might try to complete some of these empires in the near future.
The chronology has 323 members.
The largest relation has 1817 members.
Before American Revolution in 1776
https://en.wikipedia.org/wiki/Market_town
A “market town” (German Markt) is a center for local trade, larger than a village, but smaller than a town. In Denmark and Northern Germany, they are called Flecken or Freiheit. They are most common in Austria, Bavaria and Switzerland, but also in Czechia (městys=small town), Lithuania and Poland (miasteczko=small town): https://de.wikipedia.org/wiki/Liste_der_Märkte_in_Bayern https://de.wikipedia.org/wiki/Liste_der_Städte_in_Österreich
For historical reasons, Garmisch-Partenkirchen ist the biggest market town in Bavaria with 27,000 inhabitants, but still marked as village. Villages appear on map level 12 while towns appear on map level 9. A new category of market towns or small towns appearing on level 10 or 11 would be helpful.
There should be 21.
Referenced: https://california.amateurtraveler.com/missions-of-california-map/#missions-of-california-map
Greetings everyone! I have been active on OpenHistoricalMap since mid 2020 and have done a lot to contribute to the map. Countries in Europe are mapped extremely well and it is something nice to hear along with their corresponding borders. When it comes down to countries beyond Europe, East Asia and some parts of the Americas many more countries could be added to the map and I have added a few myself. In terms of where mapping could best be improved at is in Africa, Americas (beyond Canada and the US), Middle East and Oceania. If you set the slider to 2024 most of Africa, Middle East, Oceania, large parts of the Americas aren’t mapped that well.
일
Please be sure to check out:
This is from the Mapping USA 2024 OHM Office Hour notes:
As someone who grew up in Newbury Park, California, I’ve always found the history of the area fascinating. Lately, I’ve gone through quite a bit of research to map out all of the original road alignments so that I might be able to picture what my homeland would have been like before the developers got ahold of it. As far as I can tell, the whole area was wide-open agriculture space.
I get distracted easily and have mapped thousands of prospects as a part of a mining area. This is not as well mapped in OSM as most of these are historic and don’t occur as new for OSM. They are still a hazard that presents in the current day. As such I got distracted mapping them https://www.openhistoricalmap.org/node/2093760807#map=20/39.46412/-119.34875&layers=O&date=1900&daterange=1800,2021
Adits are also a less than ideally mapped location as they often show an entrance and a direction of travel into a hill on a TOPO map that we could be including that OSM does not allow for that detail.
9/20 added more prospects https://www.openhistoricalmap.org/node/2093773209 and springs from TOPO maps in the state of Nevada. https://www.openhistoricalmap.org/changeset/23828#map=14/41.8082/-119.0720&layers=O&date=1900&daterange=1800,2021
03/08/2021-09/08/2021
User nfgusedautoparts live streamed: an OpenHistoricalMap talk - Extended Date Time Format https://www.twitch.tv/videos/1118163858 Nfgusedautoparts live streams on Saturdays
User Natfoot (Me) also live streamed editing on OHM https://www.twitch.tv/videos/1120194359| Natfoot live streams on Mondays with a voice and video about Weekly OSM and Weekly OHM before editing on one of the platforms.
