Now part of the National Trust property of Downhill Estate & Mussenden Temple, the grounds encompassing Mussenden Temple, and its manor house (Downhill Castle) are open to the public all year, dawn to dusk. The temple itself is open on certain days, and admission is free. The Temple offers magnificent views westwards over Downhill Strand towards Magilligan Point and County Donegal and to the east Castlerock beach towards Portstewart, Portrush and [Fairhead].
Visit the Mussenden Temple Website