Reply To: [Assigned] Relationship of location taxonomies and category taxomonies?

We have recently had two other users with the same requirements. The idea is use a taxonomy for this, but WordPress only provides navigation for one taxonomy at a time with its archive pages. So we add a URL parameter to control the contents of a View.

Take a look at these other two threads and let me know any questions you have:

http://wp-types.com/forums/topic/retrieving-entries-under-specific-realtions-and-taxonomy/
http://wp-types.com/forums/topic/custom-taxonomy-and-custom-post-listing-display-issues/

I have also forwarded a request to get a user guide written for this in our documentation.

Please let me know if you are satisfied with my answer and if I can help you with any other questions you might have.

Regards,
Caridad