Rhondda Cynon Taf is a county borough in South Wales.
It has 89 scheduled monuments, seven of which cross or are on a border with a neighbouring authority.
There are three Roman sites, all military in purpose, and a variety of medieval mottes, churches, houses and a bridge.
The compilation of the list 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 Glamorgan-Gwent Archaeological Trust.