The Zaragoza City Council offers a list of free open data on the city in order to create data art projects based on data visualization.

There are 11 data sets in SOLR  format such as air and water quality, incidents on public roads, facilities, public art, etc.

The links where to get information are:

http://www.zaragoza.es/ciudad/risp/buscar_Risp

http://www.zaragoza.es/ciudad/risp/buscar_Risp?&content_type=SOLR

How to use open data

http://www.zaragoza.es/ciudad/risp/camposindizados.htm

For any technical inquire regarding the use of these open data sets,  please contact: internet@zaragoza.es

This post is also available in: Spanish