There are many hundreds of fascinating prehistoric sites in Wales, in some of the most beautiful locations in Britain, from mountaintop settings, such as at Bryn Cader Faner, to headlands with all-round sea views, as at Coetan Arthur, or on truly remote moorland, as at Bannau Sir Gaer. The road links between North and South Wales are not that great, so it's probably best to choose one or the other as a destination unless you are up for a lot of motoring.

In North Wales, Anglesey has a particularly dense concentration of megalithic sites, with many in Gwynedd and Conwy to visit on the way. South Wales stretches from Monmouthshire to Pembrokeshire, where there is the biggest and best variety of sites, including the iconic Pentre Ifan with its capstone apparently delicately floating over its three massive uprights. The Old Stones of Wales is part of a series covering the megalithic and other prehistoric sites of Britain and Ireland. The series is published together as The Old Stones: A Field Guide to the Megalithic Sites of Britain and Ireland, available as a book and an ebook.