Locally chosen, not algorithmic. In rough order of "if you only do one thing".
History
Mussenden Temple
Built in 1785 by Frederick Hervey, the Earl Bishop of Derry, as a clifftop library — the inscription around the dome is from Lucretius: 'Tis pleasant, safely to behold from shore the troubled sailor.' Catholic Mass was said in the basement (Hervey was, for a Bishop of the established Church, unusually ecumenical). The cliff edge is now ten metres closer than when he built it.
Good to know · National Trust property, paid entry to the demesne; the temple itself is free to walk to once inside. Open daily, with shorter winter hours.
History
Downhill Demesne & the ruined house
The shell of Hervey's enormous mansion, gutted by fire in 1851, rebuilt, gutted again in 1950, and now a ruin in formal grounds. The Black Glen, the dovecote, the mausoleum — the whole estate is a walk through one obsessive 18th-century mind. Plan an hour at minimum.
Good to know · Same NT entry as Mussenden. Lion's Gate car park gives the easiest access to the temple; Bishop's Gate from the strand side is the dramatic approach.
Beach
Downhill Strand
Walk down through Bishop's Gate and the path drops you onto the strand — seven miles of firm sand running west toward Benone and Magilligan Point at the mouth of Lough Foyle. The temple looks down from the cliff above.
Good to know · Free walking access from Bishop's Gate. No lifeguards along most of it; tides come in fast.
Beach
Benone Strand
The western run of the same seven-mile beach — Blue Flag, lifeguarded in summer, and one of the few in Northern Ireland you can legally drive onto. Wide enough that a busy August day still feels half-empty. The Binevenagh cliffs rise behind; the Donegal hills sit across the Foyle in front.
Good to know · Vehicle access from Benone Avenue, paid in season. Lifeguards Jul–Aug. Caravan park, café, and a small play area at the entrance.
Drive
Magilligan Point & the Foyle ferry
The far western end of the beach — a sand spit reaching across the mouth of Lough Foyle, with a Martello tower at the tip and a small car ferry running across to Greencastle in Donegal. The shortest cross-border crossing on the route: a 15-minute sailing that saves the 90-minute drive round through Derry. The point is also home to Magilligan Prison and an Army training and firing range; the road in passes both, and red flags flying near the dunes mean the range is live — stick to the marked routes.
Good to know · Lough Foyle Ferry sails roughly hourly, daytime, year-round (reduced in winter). Cars, foot passengers and bikes; cash or card, accepts £ and €. Timetable at loughfoyleferry.com. Don't cross onto the firing range when red flags are up.
History
Hezlett House
A 17th-century thatched longhouse a mile inland from the temple, one of the oldest buildings in Northern Ireland still standing. Cruck-frame construction; furniture from three generations of the Hezlett family. National Trust, opens summer weekends only.
Good to know · Castlerock, near the A2. Limited summer opening — check the NT website before driving over.
