Ice house, Glenarm Demesne, Glenarm, Ballymena, Co Antrim

A small, earth-covered domed ice house built perhaps around the 1840s, located just under half a mile south of Glenarm Castle within Glenarm Demesne.

The structure is brick lined and covered with earth, with bushes growing from its mounded surface. To the north there is a broad arched opening with rough stone dressings. The building's date is uncertain: an ice house appears on the Ordnance Survey map of 1857 but not on that of 1832. A valuation record of 1833 mentions a recently built ice house on the estate with dimensions of 34 feet by 14 by 6 feet, though these measurements appear to describe a rectangular building. The 1832 Ordnance Survey map shows a rectangular building on or near this site, which may be the structure recorded in the 1833 valuation. If so, the present domed structure dates after 1832.

A segmental iron footbridge with a timber walkway once stood a short distance to the south-east of the ice house. This bridge was relocated around 1991 and now spans the Glenarm River approximately 1.5 miles to the south, west of Lord Antrim's cottage. The structure was lengthened to accommodate the topography of its new location. Photographic evidence suggests the iron bridge was in place by 1872, though the 1857 Ordnance Survey map marks a "rustic bridge" at this location, suggesting an earlier stone or timber structure.

A few metres to the north of the ice house once stood a small church known locally as Templeoughter, meaning "the upper church". This was apparently built around 1445, possibly as an oratory for the friary established at Glenarm in that year (where St Patrick's Church of Ireland now stands), but was recorded as "utterly decayed" by 1622. In the 18th century, its remaining stones were used to build a row of cottages called Beggar's Row further north, nearer to the castle. These houses were demolished in 1804.