Magilligan (named after "MacGilligans country") peninsula lies in the northwest of County Londonderry, Northern Ireland, at the entrance to Lough Foyle. It is a huge 32 km2 coastal site, part British army firing range, part nature reserve.
A Martello Tower was built here in 1812, rather late in the British sequence, as the original plan for a fort at Magilligan point was impractical due to soft ground. A genuinely round tower mounting two 24 pounder (11 kg) guns, it has been beautifully restored but is normally locked.
It is close to Bellarena railway station and there is a ferry service which operates all the year around with Greencastle, County Donegal across the lough.
The famous Irish harpist Donnchadh Ó Hámsaigh lived in Magilligan.