There are more than 30 islands on Lough Key in Co Roscommon, most of them blanketed in old woodland and many of them having intriguing ruins, including mediaeval monasteries and McDermott's Castle on Castle Island.
Equipped with a modest boat, you could spend months exploring the lake. And when you've exhausted all imaginative avenues afloat, make for the southern shores of the lake to Lough Key Forest Park. Its 800 acres include nature walks, ringforts and a souterrain, a high-wire adventure park, marina and café.
The townland of Doon, always known locally as the Rock of Doon, hugs the western shore of Lough Key, looking out over Stag Island.
This stone-built dormer bungalow is less than half a kilometre from the water's edge and it's in an elevated spot, the better to enjoy the long-range views.
Its owner is a noted stone-cutter and there is stone everywhere in the house, from limestone and sandstone to marble and granite. It's 3,520 sq ft with a pleasantly complicated footprint, all angles and gables and varied roof lines.
The ground floor has a living room with a vaulted ceiling and unusual carved stone fireplace, a conservatory, and a study with steps up to a mezzanine library.
There are two more reception rooms and a kitchen downstairs, along with one bedroom with an en suite.
The other three bedrooms are on the first floor, and all are en suite. There's also a basement that might be used as a workshop, studio or den.
The house has oil-fired central heating and as a relatively recent build it has a B3 energy rating. The site includes a patio and some mature woodland.
The house is about five kilometres north of the town of Boyle, home town of actor Chris O'Dowd. It's for sale for €625,000 with Property Team Smith Kelly Scott (071) 966 2124.