County Longford: See
Corlea Trackway is an oaken track into the bog, constructed in 148 BC. It was probably used for ritual rather than transport and only for a few years before sinking into the bog. It's open May-Sept, see Longford.
Granard is a small village in the north of the county. Its Motte was built in 1199 over an earlier ring-fort, creating a wooden fortress. Nothing remains of that, so it's just an earth mound. In 2017 some treasure-hunters were sufficiently lured by the fabled gold within that they tunnelled into it, where lo and behold, no gold. On the village main street, Knights and Conquests is a museum majoring on the Norman / medieval period. It's open Tu-Sa 10AM-4PM.
Churches: St Mel's in Longford is the finest.