List of Sites of Special Scientific Interest in Wales

A Site of Special Scientific Interest (SSSI) is a conservation designation denoting a protected area in Wales, as elsewhere in United Kingdom. SSSIs are the basic building block of site-based nature conservation legislation and most other legal nature/geological conservation designations in Great Britain are based upon them, including national nature reserves, Ramsar sites, Special Protection Areas, and Special Areas of Conservation.

Source: Wikipedia — List of Sites of Special Scientific Interest in Wales (CC BY-SA 4.0)