Drumbo Round Tower lies within the grounds of the local Presbyterian church. Historically the tower was attached to a medieval parish church and monastery, the foundations of which can be seen in the modern day graveyard on the site.
The tower dates from around the early medieval period and is a scheduled historic monument. The original structure was severely damaged when the site was plundered by Connor, son of Artgal McLochlin in 1130.
The site of the Drumbo round tower and medieval monastery is one of the oldest religious foundations in Ireland. In the life of Saint Patrick, which is contained in the Book of Armagh, the name Drumbo signifies 'the long hill of the cow,' which was translated into Collum Bovis, a name by which the ancient church was known. The round tower was originally built here to take advantage of the panoramic views over the Lagan Valley. At the time of the tower's construction, these views would have been useful in spotting incoming Viking raids.
The tower survives to a height of 10.7 metres. It is 5 metres in diameter, with an internal diameter of 2.75 metres. The wall is about 1.2 metres thick. The entrance in the east is 1.5 metres above ground level and is 1.68 metres high and about 0.56 metres wide. Inside there are beam holes indicating that the internal floors were of timber and there are six surviving levels including the basement.References:
Roman Walls of Lugo are an exceptional architectural, archaeological and constructive legacy of Roman engineering, dating from the 3rd and 4th centuries AD. The Walls are built of internal and external stone facings of slate with some granite, with a core filling of a conglomerate of slate slabs and worked stone pieces from Roman buildings, interlocked with lime mortar.
Their total length of 2117 m in the shape of an oblong rectangle occupies an area of 1.68 ha. Their height varies between 8 and 10 m, with a width of 4.2 m, reaching 7 m in some specific points. The walls still contain 85 external towers, 10 gates (five of which are original and five that were opened in modern times), four staircases and two ramps providing access to the walkway along the top of the walls, one of which is internal and the other external. Each tower contained access stairs leading from the intervallum to the wall walk of town wall, of which a total of 21 have been discovered to date.
The defences of Lugo are the most complete and best preserved example of Roman military architecture in the Western Roman Empire.
Despite the renovation work carried out, the walls conserve their original layout and the construction features associated with their defensive purpose, with walls, battlements, towers, fortifications, both modern and original gates and stairways, and a moat.
Since they were built, the walls have defined the layout and growth of the city, which was declared a Historical-Artistic Ensemble in 1973, forming a part of it and becoming an emblematic structure that can be freely accessed to walk along. The local inhabitants and visitors alike have used them as an area for enjoyment and as a part of urban life for centuries.
The fortifications were added to UNESCO"s World Heritage List in late 2000 and are a popular tourist attraction.