Map of all the buildings in the world
62 comments
·December 4, 2025wongarsu
liotier
InfoReseaux remarked that this data is suspicious, to say the least: CC BY-NC 4.0 but contains ODbL licensed data coming from Openstreetmap - but also from Microsoft.
Thread on the Openstreetmap forum: https://community.openstreetmap.org/t/is-globalbuildingatlas...
Christian Quest sent the following message to the authors:
"I’m writing to you because I’m surprised by the choice of data license you’ve set on the GlobalBuildingAtlas dataset.
As mentioned and explained in your paper, at least two data sources you’ve been using to create this dataset are under the Open Database License (ODbL): OpenStreetMap and Microsoft building datasets.
I’ve downloaded the extract of data you’re proposing to have a look at the final dataset, and it confirms that building polygons from OSM (and Microsoft) are present in the resulting dataset in a substantial portion.
In such case, your dataset must be published under the ODbL licence (see 4.2), because it is a derivative database (see 1.0 of ODbL license for definition).
A copy of this message has also been sent to the Legal Working Group of the OSM Foundation.
Thanks in advance to fix quickly the license of the dataset you published. This will also allow OpenStreetMap contributors to use it to improve OpenStreetMap, which is not possible with the CC-BY-NC you choose."
plaguna
So here is finally the data that I needed for my idea: walk directions from A to B while never leaving the shadows, suggesting bars and pubs where to wait while the shadows catch up and let you cross “safely” where before was sunny.
Useful for scorching weather places like south of Spain.
josters
Currently building something like this for my city. One major challenge I've come across so far is that most APIs will give you coordinates for an address of a place within a building but none of the free, paid or crowdsourced options have reliable information on outside seating polygons. Of course, you could always display the places around you with live shadow data on a map, leaving it up to the user to zoom in and decide based on the satellite image whether the restaurant or café offers outside seating. But to plot the route and then suggest nearby sun/shadow seating options to the user, you would need this information.
whackernews
I do a similar game when walking around but the complete inverse. I live in the UK.
fluoridation
So running directions from B to A while never touching any shade, suggesting churches and rehab centers to ignore while the shadows stay perfectly still?
nceheil
You can fool me Dracula
maelito
Would need this, inverted, for winter.
szemy2
Check out sunseekr its popular here in the uk: https://sunseekr.com/
qwertox
In that case https://app.shadowmap.org could be a better recommendation.
dzink
The height measure when you click on a building is not very accurate. Clicked on two next to each other (one single floor and one with two floors) and the single story house was marked taller by the site.
sdoering
Can confirm. My garage is marked double the height of my actual house. Both are incorrect. My shop building on my property, next to the garage is actually missing.
The positioning of the shapes in relation to each other are also wrong. And not in a subtle way.
Looked at the house my father built in 1985. A few hundred kilometers from my current location. The shape is wrong (as are the shapes of all neighboring buildings. As are the positions toward each other (distance between houses, rotation of shapes). The heights are also significantly wrong. The two story houses on the opposite side of the road are said to be slightly above 2 meters in height.
d_silin
quite a lot of height errors, checked my neighborhood as well, often by orders of magnitude off.
jspann
I've had a project idea in the back of my mind for a long time: take all of my locations that I've saved in Swarm (https://swarmapp.com) and 3D render all of the buildings that I've been to. The issue was a lack of models of the actual buildings - which is here! Maybe it is possible...
tppiotrowski
> This is a huge leap from the previous global dataset, which contained about 1.7 billion buildings
I use the monthly release of Overture Maps building dataset and the last one had around 2.3 billion buildings iirc
[1] https://docs.overturemaps.org/blog/2025/11/19/release-notes/
vhu2
Alphabet, please open your mapping data. I understand it’s your IP, but given that the value in Google Maps far exceeds the mapping data and won’t be replaced, think of all of the good that would come of it. For one thing, you wouldn’t have to worry about people posting inaccurate maps like these.
dr_dshiv
Google recently has made efforts to link Gemini to Google Earth data. “Earth AI”
Has anyone tried this? I’m not quite sure how to prompt it effectively.
mistrial9
arxiv:2510.18318
stevenjgarner
What is the crowd process to upgrade/correct this? I notice massive errors in small Midwest US towns (multiple buildings being combined/ommitted, etc)?
cdkmoose
Looking around my home area, I found HS football bleachers showing up as buildings and an outdoor basketball court showing up as a building. Looking at the coloring of those features on Google maps, I can see how the mistakes might have been made. But still feels like it needs tuning.
To be fair, I checked my boyhood home in very rural Maine and it was correct for the size and shape of the multiple farm buildings.
AStrangeMorrow
Yeah some areas I looked at seemed fine (US, EU, Shangahi), but some the buildings are on top of the roads, and they look more like Perlin Noise than actual buildings. E.g main parts of Beijing.
OpenStreetMap and such have pretty good building footprints, sometimes enriched with building heights. Maybe that can be used for some correction
whizzter
It's machine-learning generated "slop" honestly.
Looking at where I live and where I grew up the building heights are quite badly estimated.
- Some groups of houses around here that are more or less identically built but on sloped terrain are reported to have widly differing heights
- My neighbour building is reported to be half the height of this building (they're more or less equally high at 5 stories)
- A small office shack behind the neighbour building is reported to be taller than it (it's a single-story building, the neighbour building is 5 stories)
- The freestanding buildings on the farm where I grew up are like you said, badly combined, much of the estimation there seems to be dependent on shadows,etc.
JoeAltmaier
Still useful for a sense of building density. If almost everything called out is some sort of construction, then the density map of the world is a realistic estimate of human occupation.
f4c39012
Or, they subtracted a digital elevation model from a digital surface model, ran a point-in-polygon match against an existing building dataset, and labelled the difference as the height of the building. No ML needed.
basscomm
There's a notice in the bottom-left corner on desktop that says: "This is a machine-learning-derived product. Errors may occur"
kjkjadksj
Other comments said they fed 2d aerial imagery into transformer and thats it.
jabron
They've used a vision transformer to estimate building heights from monocular aerial photographs, so they're guesses at best. Calling this a map is a stretch.
JoeAltmaier
Hey maps used to have sea serpents and winged griffins. It's a map. Maybe not the best map.
chakintosh
I checked the building heights where I live vs the actual heights, sometimes they display the height as half of what the actual height is.
fainpul
I found a few that are off by a factor of about 4. Always lower than in reality, never taller.
mrec
At least in Firefox, this page doesn't scroll at all. No scrollbar, scroll wheel/cursor keys/PageDown all do nothing.
How does someone screw up CSS so completely?
matteason
You have uBlock Origin or another ad blocker installed, their cookie banner disables scrolling but your ad blocker is blocking the cookie banner (same thing happened to me)
LukaD
Same here with uBlock on iOS. This happens every now and then, not too often. But when it does, I usually decide the page is probably not worth reading anyway.
nirewen
For me it was the cookie notice. Had to disable uBlock and reject them before the page could be responsive again.
dudefeliciano
works for me on FF
snowstorm82
Groups of boats in the dock have become buildings. Cool project still.
1970-01-01
If AI says a floating building is a building I will agree with it. It isn't wrong but it isn't right.
suyash
lol, AI lacking effective QA process it seems
JoeAltmaier
Revealing: third-world areas look different. Curiously, Australia resembles third-world building density more than it resembles the industrialized world.
Github: https://github.com/zhu-xlab/GlobalBuildingAtlas
Viewer: https://tubvsig-so2sat-vm1.srv.mwn.de/ (might already be hugged to death? When it works you get a heatmap when zoomed out, and 3d models with flat roofs when you zoom in far enough)
Looks pretty cool. Obviously only covers above-ground buildings or above-ground portions of buildings. Also seems like it tends to view buildings built wall-to-wall next to each other as the same building, but not always. So if you calculate something like average building volume you are bound to be off quite a bit