Situated off the N4 is Lough Key Forest Park, a parkland area that has a visitor centre and activity facilities, including Boda Borg, a puzzle solving activity centre which is a Swedish concept originally unique to Sweden but now has locations in Ireland and the United States.
The park covers 800 acres (3.2 km²), and was formerly part of the Rockingham estate.
This was the seat of the Stafford-King-Harman family who at the end of the nineteenth century held over 30,000 acres (120 km²) in north County Roscommon and County Sligo.
Rockingham House was designed by John Nash in the early 19th century for the English landlord John King.
It had a domed front and 365 windows.

Rockingham House was suspiciously destroyed by fire in 1957, after which it was taken over by the Irish Land Commission.
Declared as unsafe in 1970, it was demolished.
 The tunnels to Rockingham House are still accessible to this day.
A viewing tower was built in 1973.

In the town park, known locally as the Pleasure Grounds behind King House stood a statue of William of Orange.
This was pulled down and destroyed by locals in 1945, though the base of the statue remains.

There are several islands on Lough Key.
Castle Island is among the better known islands, while Trinity Island contains the ruins of a chapel, linked to the Cistercian monastery in the town.
There are two trees growing on the island with interlinked branches, said to mark the graves of Una Bhan Mac Diarmid and Tomás Láidir Mac Coisdealbhaigh, two ill-fated lovers, celebrated in the poem Una Bhan.
Situated off the N4 is Lough Key Forest Park, a parkland area that has a visitor centre and activity facilities, including Boda Borg, a puzzle solving activity centre which is a Swedish concept originally unique to Sweden but now has locations in Ireland and the United States. The park covers 800 acres (3.2 km²), and was formerly part of the Rockingham estate. This was the seat of the Stafford-King-Harman family who at the end of the nineteenth century held over 30,000 acres (120 km²) in north County Roscommon and County Sligo. Rockingham House was designed by John Nash in the early 19th century for the English landlord John King. It had a domed front and 365 windows.
Rockingham House was suspiciously destroyed by fire in 1957, after which it was taken over by the Irish Land Commission. Declared as unsafe in 1970, it was demolished.  The tunnels to Rockingham House are still accessible to this day. A viewing tower was built in 1973.
In the town park, known locally as the Pleasure Grounds behind King House stood a statue of William of Orange. This was pulled down and destroyed by locals in 1945, though the base of the statue remains.
There are several islands on Lough Key. Castle Island is among the better known islands, while Trinity Island contains the ruins of a chapel, linked to the Cistercian monastery in the town. There are two trees growing on the island with interlinked branches, said to mark the graves of Una Bhan Mac Diarmid and Tomás Láidir Mac Coisdealbhaigh, two ill-fated lovers, celebrated in the poem Una Bhan.
Boyle, County Roscommon