Harlech

Harlech is a small town near the Cardigan Bay Coast. Home to a famous castle (which is a World Heritage Site), it sits on a steep slope where Snowdonia gives way to coastal flats. It is home to the steepest-signed road in Britain: the Ffordd Pen Llech, which at 40% is also one of the steepest in the world.

The A496 originally took the high route through the town, but then swapped with the B4573 to take the low road.

Routes

Route	To	Notes
A496	Maentwrog	formerly B4573
A496	Abermaw, Barmouth
B4573	Town centre / Canol y dref	formerly A496