We travelled the length of both railways in both directions over two days in glorious sunshine . From Porthmadog to Caernarfon we sat in the open carriage which allowed us to really enjoy the countryside. Spring lambs, wild flowers and masses of daffodils. I would recommend a spring or autumn trip if possible when there are less leaves on the trees allowing wonderful views. The staff are friendly and helpful and run a buffet service to your seat. Two great trips!