Nominatim / OpenStreetMap
Community-maintained street map data used for the default street base layer. Reverse geocoding and address lookup via the Nominatim service. © OpenStreetMap contributors, available under the Open Database License (ODbL).
Credits & acknowledgements
Standing on the shoulders
of open data & open source.
UrbanLens is built from community-maintained maps, geospatial datasets, and free software. This page lists the projects and providers whose work makes the platform possible.
Map tiles & geospatial data
What you see on the map
Base layers and overlays on the main map draw from the sources below. Attribution shown will vary by layer; the map footer shows credits for whichever layers are active.
OpenTopoMap
Topographic hillshade and contour tiles built from SRTM elevation data and OpenStreetMap. Map style © OpenTopoMap (CC-BY-SA); elevation data © SRTM.
Esri
Satellite imagery and geopolitical boundary reference layers. Tiles © Esri - sources include Esri, i-cubed, USDA, USGS, AEX, GeoEye, Getmapping, Aerogrid, IGN, IGP, UPR-EGP, and the GIS User Community.
CARTO
Dark Matter basemap tiles used when map dark mode is active on street and terrain views. © OpenStreetMap contributors © CARTO.
OpenWeatherMap
Precipitation and cloud overlay tiles on the optional weather layer. Map data © OpenWeatherMap, subject to their terms of use.
Mapping libraries
Interactive map engine
Leaflet
Open-source JavaScript library for mobile-friendly interactive maps (BSD-2-Clause).
Leaflet.markercluster
Marker clustering plugin for grouping nearby pins at lower zoom levels (MIT).
External data & APIs
Enriched location information
Pin and location pages may fetch supplementary data from third-party services.
Google Maps Platform
Places, geocoding, Street View imagery, and related location services.
Wikipedia / Wikimedia
Encyclopedia summaries and freely licensed media from Wikimedia Commons.
Smithsonian Institution
Historical photographs and collection records from Smithsonian open-access APIs.
U.S. National Park Service
Park information and points of interest from NPS public data APIs.
OpenAI
The openai Python client library powers our OpenAI-compatible API calls. We are not currently using OpenAI’s GPT models, though we may enable them in the future.
Cloudflare Workers AI
Optional AI-assisted features are routed through Cloudflare Workers AI.
Mistral AI
The Mistral 7B Instruct model powers several AI-assisted features, hosted via Cloudflare Workers AI.
Anthropic Claude
Claude models are also used for AI-assisted features.
Brave Search
Web search results for the pin detail pages.
Community
Contributors
UrbanLens is open source. These people have contributed code in the github.com/UrbanLens/UrbanLens repository. New contributors will be added to this list automatically.
info
Corrections welcome
If we have missed a required attribution or misstated a license, please open an issue on Github so we can fix it promptly.