Anglesey has been a focus for human settlement from Neolithic times onward and has been a cross-roads for sea traffic. These characteristics have been reflected in its antiquities. The Inventory of Ancient and Historical Monuments was first published in 1937and owing to its subsequent popularity was reprinted in this edition in 1968, incorporating Additions & Corrections. it offers a comprehensive account of all monuments considered worthy of inclusion from megalithic tombs to Telford's bridge across the Menai Straits.