SEOUL 3D ATLAS — DATA AND SOFTWARE ATTRIBUTIONS

Map geometry and buildings: © OpenStreetMap contributors, made available through OpenFreeMap and OpenMapTiles.
OpenStreetMap data is available under the Open Database License (ODbL) 1.0:
https://www.openstreetmap.org/copyright
https://opendatacommons.org/licenses/odbl/1-0/
This derived map database is offered under ODbL 1.0 as well. The processed vector snapshot is 2026-08-30.
Download /data/seoul.json and /data/buildings.bin to obtain the derived data.
The binary building format is little-endian float32: [x_km, z_km, width_km, depth_km, angle_radians, height_m], repeated for each building.
Projection origin and coordinate scale are in seoul.json meta. Building heights can be source estimates; footprints are simplified oriented boxes.

District boundary source: southkorea/seoul-maps / Statistics Korea (KOSTAT), 2013.
https://github.com/southkorea/seoul-maps
Historical boundaries are shown as optional reference boundaries.

Elevation: Mapzen / AWS Terrain Tiles.
Global ETOPO1 terrain data: U.S. National Oceanic and Atmospheric Administration.
Global GMTED2010 and SRTM terrain data courtesy of the U.S. Geological Survey.
https://registry.opendata.aws/terrain-tiles/
https://github.com/tilezen/joerd/blob/master/docs/attribution.md
Elevation is smoothed, shorelines are flattened for display, and vertical scale is exaggerated by 4.

Three.js r180 / OrbitControls — MIT license follows.

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