From the early medieval period, Offa's Dyke has ten notable sections in the county, whilst the older Wat's Dyke has nineteen scheduled sections.
From the post-Norman medieval period, Flintshire offers a very diverse range of monument types: twenty sites, with ten different site types, including castles, castle mounds, moated sites, chapels and a holy well, field systems, a deserted village and an abbey.
In the post-medieval period, there is a packhorse bridge and a lockup, but it is the industrial sites that stand out, especially the water-powered industries in the Greenfield Valley and the pottery sites in Buckley.
The compilation of the list of sites is undertaken by Cadw Welsh Historic Monuments, which is an executive agency of the National Assembly of Wales.
[1] The list of scheduled monuments below is supplied by Cadw[2] with additional material from RCAHMW and Clwyd-Powys Archaeological Trust.