Some people have trouble with the pronunciation: it’s Ma-gaberry, Northern Ireland’s high-security prison located on about 150 acres in rural Co Antrim beside the small village of Maghaberry, not far from Lisburn.

To get there, visitors must turn off the M1 motorway along which the New IRA shot dead David Black as he was driving to work in 2012. Maghaberry Prison, located on the site of an old second World War II airfield, opened in 1986.