STUNNING!! A Beautiful Stroll Around Mussenden Temple & Downhill Demense, Northern Ireland August 12, 2021 Admin Hidden Ireland The Mussenden Temple and Downhill Demesne The Mussenden Temple and Downhill Demesne is a National Trust property consisting of Downhill Castle and its estate, which includes the Mussenden Temple. Credit to : The Dons Channel Please support our Sponsors here :