County Leitrim: See
Glencar Lough has the famous Glencar waterfall.
Lough Gill is mostly in County Sligo and usually visited from the city, but Parkes Castle is near its head in County Leitrim.
One of the world's smallest churches is the Costello chapel in Carrick.
Standing stones: Fenagh in the east of the county has the best.
Down a coal mine: the former coal mine at Arigna near Drumshanbo has tours.
Cavan and Leitrim Railway is a heritage narrow gauge railway at Dromod, next to the mainline station. It operated 1857-1959, hauling coal from Arigna mines.