This pretty village in the Dyfi Eco Valley was built to house workers in the local slate quarries. Now it has a railway museum, and part of the old narrow gauge railway to the slate quarries has been re-opened by volunteers (see the Corris Railway web site for details).
On the main road towards Dolgellau are the Corris Craft Centre and King Arthur’s Labyrinth, a son et lumière retelling of the Arthurian legends in the spectacular caverns of an old slate mine.
Corris is a good centre for walking, biking and riding but accommodation is still difficult to find. The Braich-goch Hotel has a bunkhouse - http://www.braichgoch.co.uk/ - and there is a hostel - http://www.corrishostel.co.uk/. There are also a couple of B&B establishments in Aberllefenni.