Interactive map with all the information can be found at http://pota.us
There are about 2,000 POTA references in Spain. It includes the national parks, nature parks, nature reserves, European protected areas Red Natura 2000, etc.
If you see any error in the location of the references, websites listed in the info page, misspellings, etc. please do not hesitate to email me and I will be happy to fix it.
POTA Rules in Spanish (Translated from official rules by Spanish volunteers)
POTA FAQ in Spanish (Translated from official FAQ by Spanish volunteers)
Parks on the Air - España Facebook (Spanish language)
17 Comunidades Autónomas
50 provincias and 2 autonomous cities
Spanish National Parks (15)
Number of Espacios Naturales Protegidos (Protected Natural Spaces)