The definition of Natural Park consists on an area that comprises natural (predominantly) or semi-natural ecosystems, where the long-term preservation of biodiversity may depend on human activity, ensuring a sustainable flow of natural products and services.
In mainland Portugal, there are currently 13 Natural Parks:
The definition of Natural Reserve consists on an area that contains ecological, geological and physiographic characteristics, or other features with scientific, ecological or educational value, and that is not permanently or significantly inhabited.
In mainland Portugal, there are currently 9 Natural Reserves:
Birdwatching is amoung the best things to do in Natural Parks or Reserves.