Geograph - photograph every grid square

The National Inventory of Architectural Heritage (NIAH) maintains a central database of the architectural heritage of the Republic of Ireland covering the period since 1700 in complement to the Archaeological Survey of Ireland, which focuses on archaeological sites of the pre-1700 period. As of 2020, there are over 40,000 records in the database, including buildings, monuments, street furniture and other structures. The NIAH dataset does not cover Northern Ireland.
A map search can be done at Link

The Eglinton Canal was constructed between 1850 and 1852 for three purposes. The first was to connect Lough Corrib to the sea at Galway so that goods could be transported in both directions. The second was to provide a more reliable flow of water to power the many mills that were already located along the natural rivers. The third reason was to provide paid employment during the famine period. The walls of the Canal were constructed of black limestone taken from the Angliham quarry in Menlo.