Spanish AIP
Land owners permission required
Maximum 3 times per month
AESA should be notified
Spanish ANO
If private flight, less than 6 seats you don't need to notify AESA
Nature Park
If it is within a designated nature park, then civilian helicopters are not permitted to land
Email me
[email protected] and I can send you the relevant details
Cheers Jonny
Jonny is correct. The only exception to those rules are given by a "Letter of exemption", usually provided to HEMS, Firefighting, Police and SAR aircraft enabling them to enter restricted airspaces, off-airport landings, and so on.