Porth-y-Twr, including Gateway & South Tower

Bell-tower is large two-stage octagonal tower with moulded plinth and moulded course before set-back bell-stage, ruinous and roofless in old photographs but now with corbelled flat parapet. Bell-stage has large pointed openings, originally longer but part-blocked, with hoodmoulds. Lower stage has E side lancet and N side pointed moulded doorway with column shafts and hoodmould. Studded plank doors. SE stair tower projecting slightly on upper stage and rising to restored octagonal turret. S side obscured by attached gateway.

Gateway and S tower added to S in rougher rubble stone with corbel table below former battlements, now ruinous. Rounded S end with higher corbel table. E front has big segmental pointed arch over roadway, small blocked doorway to right with loop over. To right, without break in walling, S tower with one high window, rounded S end with Close Wall attached to SW; W front window at upper level and lower large pointed light to left, just before change in level of corbel table. To left, segmental-pointed large arch over roadway, and above, to left a small window robbed of ashlar.

Southern range is roofless, but within gateway, two portcullis slots and double archway on N side, robbed of ashlar, giving access to half-round recess with narrow round-headed doorway. South side has round headed narrow doorway. Studded plank doors with iron strap hinges to both doorways.