Directive 2003/98/EC of 17 November 2003 on the re-use of public sector information.
Convention on access to information, public participation in decision-making and access to justice in environmental matters, done at Aarhus (Denmark) on 25 June 1998 and ratified on 29 December 2004.
Directive 2007/2/CE of 14 March 2007 on the establishment of a spatial information infrastructure within the European Union (INSPIRE).
Law 14/2010 of 05 July 2010 on infrastructures and geographic information services in Spain.
For further information, check the Spanish Spatial Data Infrastructures geoportal http://www.idee.es.
It is a WMS 1.3 service. Url: http://www.idee.es/wms/IGN-HK/IGN-HK? A description of this project and its content can be looked up in Capdevila and Bonilla (2009).