The Wales Coast Path … is a long-distance footpath which follows the whole of the coastline of Wales. It opened on 5 May 2012, and offers a 870 miles (1,400 km) walking route from Chepstow, in the south, to Queensferry, in the north.
Wales is the first country in the world to provide a dedicated footpath along its entire coastline. The Path runs through 11 National Nature Reserves and many more local Wildlife Trust and RSPB reserves. …
The 870 miles (1,400 km) of the Wales Coast Path links with the Offa’s Dyke Path National Trail, which loosely follows the border with England, to create a 1,030 miles (1,660 km) continuous walking route around the whole of Wales, although skirting past Flintshire and Wrexham. …
Click PLAY or watch some highlights on YouTube.
Controversy
The Open Spaces Society has criticised some landowners who do not allow the path onto their coastal land. This means 170 miles (270 km) – more than 20% of the route – will be on roads, sometimes out of sight of the sea.
besthike.com 
Really interesting! I think the history there would also add to the ambiance.