Simon Willison’s Weblog

Of Building Blocks, Rosetta Stones and Geographic Identifiers. Yahoo! GeoPlanet is now mapped to identifiers from other gazetteers such as GeoNames, FIPS and IATA—and those identifiers are available via the GeoPlanet API.

Posted 11th April 2010 at 9:53 pm

Recent articles

Wilson Lin on FastRender: a browser built by thousands of parallel agents - 23rd January 2026
First impressions of Claude Cowork, Anthropic's general agent - 12th January 2026
My answers to the questions I posed about porting open source code with LLMs - 11th January 2026

geodata 3 geonames 7 geoplanet 7 yahoo 107

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