Immediately to the south of the lough is
Lough Key Forest Park, a popular destination for recreational walkers. The park, opened in 1972, covers formerly part of the Rockingham estate. The
Moylurg Tower, a viewing tower built in 1973, stands on the site of the old Rockingham house overlooking the lake to the north and lawns to the south. There are many amenities in the park including boat tours, boats for hire, water activities, camping and caravan park, an outdoor playground and shop. A 2007 development added a number of new attractions including a forest canopy walkway and children's play areas, to cater to the "21st-century visitor". Sir
Cecil Stafford-King-Harman (1895–1987), second (and last) Baronet of Rockingham, ensured that the land went back to the people of Ireland through the
Irish Land Commission, who subdivided the pasture land into several farms of approximately and granted these to local people. An extensive area around the then-derelict Rockingham house became the Forest Park and this was looked after by the Department of Forestry. It is currently in the care of
Coillte, a semi-state body. The park contains the remains of five
ring forts, giving evidence of the long habitation of this region. The area surrounding the lake is significant in medieval Irish literature and legend. Starting around 1000 AD, the
Annals of Boyle were compiled on Trinity Island, and from 1253 to 1590 the
Annals of Lough Key continued from where the Boyle annals ended. Lough Key was also the site for the legend of Una Bháin. Famed harpist
Turlough O'Carolan is buried at
Kilronan, three miles (5 km) to the north of the lake. ==Annalistic references==