The lighthouse is built into a wall - the entrance must be through one of the green doors on the wall??
Consequently, the lighthouse is a lot shorter and squatter when viewed from the seaward side!!
Dunmore East Lighthouse with Hook Head across the river in the background. Further up the coast from Dunmore East (and consequently on the Waterford side of the river) is the village of Crooke - this is the origin of the phrase "By Hook or by Crooke."