historic house gardens · landmark
Downhill Demesne (Castlerock)
An outdoor historic-house-gardens in County Londonderry
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Mild conditions — layers recommended
Setting
Outdoor
Who for
Ages 1–18+
Explore coastal paths, gardens and historic ruins at Downhill Demesne near Castlerock. Mussenden Temple stands above the sea, with its interior normally closed to general visits. The estate has facilities at Lion’s Gate, including toilets and a coffee outlet with seasonal hours. Check current National Trust visitor information and parking charges before travelling.
Location and map
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Opening hours
Opening hours could not be confirmed.
Last checked 24 May 2026, 11:09.
Grounds accessible dawn to dusk year-round; specific facility hours may vary. Mussenden Temple open for public during events only due to conservation requirements.
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