Nestled in the foothills of Snowdonia, the Centre for Alternative Technology (CAT) is a world-renowned eco centre that researches and supports greener ways of living.
The slate in this mine, which is found in veins between layers of ancient Pre-Cambrian rocks, is among the oldest in the world. Many industrial towns in Britain and Ireland have the original roofs made of Llanfair slate.
Portmeirion was created by the architect Clough Williams-Ellis from 1925 to 1976. He wanted to show how a naturally beautiful site could be developed without spoiling it.