The Cambrian Coast Route
Extending from Machynlleth northwards to Pwllheli, this line skirts the Mawddach Estuary, crosses the extraordinary half-mile wooden Barmouth Bridge, and rolls beneath Harlech Castle.
Suggested Detour: Step off at Fairbourne for a walk along the shingle spit, or take the miniature railway out to the mouth of the estuary where a passenger ferry links to Barmouth.