Wales’ largest bay straddles a huge swathe of the West Wales coast, rolling from North Pembrokeshire’s weather-beaten Strumble Head via Ceredigion north to the south of Snowdonia (Eyri) National Park, climaxing at the tip of the gorgeously green Llyn Peninsula and its AONB. It includes hidden coves, open sands, time-lost harbours, and one of Wales’ biggest, liveliest cultural centres, Aberystwyth. This is Europe’s best bottlenose dolphin-watching spot, and there are watersports to be found in Abersoch.