le pont-de-claix · îles de mars · olympiades
sans mur · 2026
- buildings
- 903
- trees
- 9,728
buildings, courtyards and sports grounds: IGN BD TOPO · heights and trees: IGN LiDAR HD
atterrir · a museum of neighborhoods
how it’s made
atterrir does not film the neighborhoods: it rebuilds them from public data, then sets the mOst exhibitions inside them. It is an immersion, not an exact copy. Here is where everything comes from, what is measured and what is drawn.
the neighborhoods, from public data
In France, the buildings, their courtyards, heights, floors and the materials of their walls and roofs come from the BD TOPO of IGN, the French mapping agency. Every height is checked against LiDAR HD, the IGN laser survey: the laser measurement only replaces the BD TOPO one when the whole roof answers the same way; otherwise it is almost always a tree covering it. A building that only exists in OpenStreetMap is kept only if the laser really sees a volume there. The trees also come from the LiDAR.
In Maré, in Rio de Janeiro, the buildings and their heights come from the Instituto Pereira Passos, the city’s planning institute (data.rio). Buildings that this survey does not have yet come from Overture Maps, with an estimated height.
In Medellín, the city cadastre covers only half of the area. So the houses, streets and ground come from Overture Maps, which brings together OpenStreetMap, Google and Microsoft. The slope comes from Terrain Tiles: one elevation point roughly every four meters, from 1,634 to 2,292 m.
Everywhere, the globe comes from Natural Earth, the relief seen from above from SRTM and Terrain Tiles, and the base map from OpenStreetMap.
neighborhood by neighborhood
argenteuil · esplanade salvador-allende
vision(s) du centre · 2025
- buildings
- 1,351
- trees
- 4,789
buildings, courtyards and sports grounds: IGN BD TOPO · heights and trees: IGN LiDAR HD
drancy · cité du nord
trains de vie · 2026
- buildings
- 966
- trees
- 2,183
buildings, courtyards and sports grounds: IGN BD TOPO · heights and trees: IGN LiDAR HD
nanterre · cité pablo picasso
les nuages de pablo · 2024
- buildings
- 287
- trees
- 5,366
buildings, courtyards and sports grounds: IGN BD TOPO · heights and trees: IGN LiDAR HD
nanterre · petit nanterre
nous, le petit nanterre · 2025
- buildings
- 701
- trees
- 6,460
buildings, courtyards and sports grounds: IGN BD TOPO · heights and trees: IGN LiDAR HD
marseille · centre social la maurelle
la galerie des ruches · rencontres la t.l · 2025
- buildings
- 669
- trees
- 6,549
buildings, courtyards and sports grounds: IGN BD TOPO · heights and trees: IGN LiDAR HD
rio de janeiro · complexo da maré
maré analógica · 2026
- buildings
- 6,768
buildings and heights: Instituto Pereira Passos, Rio de Janeiro City Hall (data.rio)
medellín · golondrinas · llanaditas
el parchecito · favela ocho · 2024 and 2026
- buildings
- 5,934
- trees
- 236
buildings and streets: Overture Maps Foundation (OpenStreetMap, Google, Microsoft)
what is measured, what is drawn
measured
- the footprint of every building and its courtyards
- its height, in France and in Rio
- the trees, in France
- the sports grounds
- the relief
drawn
- the look of the façades: windows, doors, colors, bricks and render follow the BD TOPO materials or the colors of each neighborhood; they are not photographs
- the height of most houses in Medellín, between one and four floors, and of the buildings added in Maré
- where the works stand
the works in the neighborhood
The images are those of the exhibitions, in their format: banners, posters, panels, plexiglass. They stand in the streets, on the walls and fences of the neighborhood, close to the places where they were shown: the 3D is for walking around with them, not for rebuilding the hanging to the inch. The installation photographs, at each stop, show how it really was.
The mOst team can move each stop on the map, and the page keeps the correction: it is a living archive, which becomes more precise with every return to the field.
licenses and credits
IGN data (BD TOPO, LiDAR HD): Licence Ouverte Etalab 2.0. OpenStreetMap and Overture Maps: ODbL, © OpenStreetMap contributors. Rio buildings: Instituto Pereira Passos, Rio de Janeiro City Hall (data.rio). Globe: Natural Earth, public domain. Relief: SRTM and Terrain Tiles. The map is drawn with MapLibre GL JS, free software. The photographs and texts of the exhibitions belong to their authors.