Описание тега geonames
Geonames refers to a database / webservice to query various geographic data items such as names of places, latitude, longitude, elevation, population in various languages.
It contains over 10 million geographical names categorized into nine classes and further subcategorized.
GeoNames is a worldwide geographical database. It is available for download free of charge under a creative commons attribution license. It is also available via a webservice API.