Lough Key Forest and Activity Park sits on the southern shores of Lough Key in Boyle, County Roscommon, covering 350 hectares of the former Rockingham estate.

Originally opened in 1972, the park offers a mix of free and paid activities set among woodland, water, and historic buildings, with something suited to most ages and fitness levels. The park serves as a key access point to the lake itself.

Visitors can hire boats or arrive by water via the Shannon Navigation system through the Boyle River, with mooring available at the park's marina. Walking trails loop through the forest, and a tree canopy walkway provides elevated views over the landscape.

Dogs are welcome in outdoor areas, and wheelchair-accessible trails and surfaces are provided throughout much of the park.