Spread throughout the interior and especially the coast of the islands there are 89 prehistoric scheduled sites, including chambered tombs, burial cairns and standing stones, hillforts, hut circles and a henge.
The 18 sites from the medieval post-Norman period include spectacular castles, remote dwellings, and wells, stones and churches.
Finally the modern period is mainly agrarian in its purposes, but also includes the copper, coal and brickmaking industries.
Clusters are found in Moelfre on the eastern side (14), Trearddur on Holy Island (11), Llanidan overlooking the Menai Strait (10) and Llangoed in the far east (10).
The compilation of the list is undertaken by Cadw Welsh Historic Monuments, which is an executive agency of the National Assembly of Wales.