Irish round tower

Irish round towers (Irish: Cloigtheach (singular), Cloigthithe (plural); literally 'bell house') are early medieval stone towers of a type found mainly in Ireland, with two in Scotland and one on the Isle of Man. As their name Cloigtheach indicates, they were originally bell towers, though they may have been later used for additional purposes.

A tower of this kind is generally found in the vicinity of a church or monastery, with the door of the tower facing the west doorway of the church. Knowledge of this fact has made it possible, where towers still exist, to determine without excavation the approximate sites of lost churches that once stood nearby.

Construction and distribution

Surviving towers range in height from 18 metres (60 ft) to 40 metres (130 ft), and 12 metres (40 ft) to 18 metres (60 ft) in circumference; that at Kilmacduagh being the highest surviving in Ireland (and leaning 1.7 metres (5 ft 7 in) out of perpendicular). The masonry differs according to date, the earliest examples being uncut rubble, while the later ones are of neatly joined stonework (ashlar). The lower portion is solid masonry with a single door raised two to three metres above, often accessible only by a ladder. Within, in some, are two or more floors (or signs of where such floors existed), usually of wood, and it is thought that there were ladders in between. The windows, which are high up, are slits in the stone. The cap (roof), is of stone, usually conical in shape, although some of the towers are now crowned by a later circle of battlements.