County Louth: See
Cooley Peninsula is the most scenic part of the county, with Slieve Foy its highest point.
Prehistoric sites: Brú na Bóinne is impressive but very touristy. Escape to Proleek Dolmen and Clochafarmore near Dundalk.
Ruined abbeys: Mellifont and Monasterboice are within 10 km of Drogheda, and Dromiskin and St Mochta's are south of Dundalk.