I'm researching layers/ definitions of CBD (Central Business Districts) in different cities worldwide. However, I could only find layers for individual sites, for example CBD San Antonio.
Is there a repository containing CBDs? If not, and if I would be able to build such a repository, would it make sense to build it in open street maps using a specific layer/tag?
Note: this question was migrated from https://gis.stackexchange.com/questions/465344/sources-for-cbd-polygons-layers