Roscommon is an inland county, much longer than wide, bordered in the east by the River Shannon. Much of it is level plain, bogland, river meadow and low hills. The highest point is on the county border with Leitrim (1385 feet), and other two heights that are significant for Roscommon are the Curlew Hills (867 feet) in the north-west and the Slievebawn Hills in the east (864 feet).
Roscommon is actually located on Ireland's fertile central plain and most of it is situated between the Shannon River and its lakes (in the east) and the Suck River, its tributary, to the west. These two provide good opportunities for fishing and cruising. The Shannon offers ample chances to swim and waterski as well. Apart from these, golf and horse-riding are spare time options while in Roscommon. Not to mention the neolithic monuments in the Curlew mountains, that attract a steady flow of visitors annually.
The county is one of peace and quiet, and is perfect for those looking for solitude. Its main attraction can be considered the beauty of the island-dotted lakes. Tourists are particularly fond of the river Shannon, as well as of Lough Ree, Lough Arrow and Lough Key. Lough Key National Park is a must-see while in Roscommon, offering nature walks, ring forts, cruising, fishing, a bog-garden, an old ice-house, picnic grounds and a fully-serviced caravan and camping site. Herds of deer wander freely through the park. The park was formerly part of the Rockingham estate and there are a lot of historical and archaeological points of interest there, principally the ruins of a McDermott castle and two medieval priories, one on Trinity Island and the other on Church Island.
Located in the province of Connacht, Roscommon was the home of the last High King of Ireland, Rory O'Connor. Clonalis House, his home, is now a library for the O'Connor Clan and is open to the public. Strokestown House, now the National Famine Museum, is worth a visit, too, as it gives a unique insight into the lives of people who battled against "The Great Hunger".
Other attractions in County Roscommon include Drumanone Dolmen and Boyle Abbey. It's also worth exploring the ruins of Roscommon Castle, as well as the Rathcroghan and Glenballythomas earthworks, that are acclaimed to have been the inauguration place of the Kings of Connacht. It consists of a great number of earthworks of different kinds, varying from a large mound (possibly a Passage-tomb, much older than the royal site) to square, round, oblong and irregularly shaped enclosures. The decorated Emlagh Cross and the 6th century monastery at Ardcarn shouldn't be forgotten either.
There are plenty of little villages in Roscommon, and the large towns are few and far between. However, they have fine places to stay and eat and friendly pubs. Roscommon town, Boyle and Castlerea are nice places to spend a day or two.
A particular attraction is Glendeer award-winning Open Farm. Both kids and adults will certainly enjoy it. There's a farm museum and a variety of farm animals, ranging from the Vietnamese pot-bellied pigs to donkeys, sheep, cattle, foxes and guinea-pigs and even to tame deer.
The prison at Roscommon town - now a shopping centre, has the story of Lady Betty attached to it, that has become the stuff of legend in Roscommon.