10. Go on a boat trip along the Lough Neagh Lake - the largest lake in the British Isles
To the surprise of many, Northern Ireland ranks the largest lake in the British Isles. Lough Neagh is just to the west of Belfast but actually borders five of the country’s six counties. Its tranquil waterways and secluded bays provide ample opportunity for boating, fishing, walking and cycling. A great way to get a handle on the lake is to tackle the 113-mile-long Loughshore Trail – but don’t worry, it’s almost completely flat.
11. Explore Marble Arch Caves
The Marble Arch Caves is one of seven parks in the UK run under the umbrella of UNESCO. Following a pleasant little walk down through the reserve, the tour begins with an atmospheric five-minute boat journey along the subterranean Cladagh River. It then continues through a succession of atmospherically lit chambers and passages.
Throughout there are clusters of weirdly shaped stalactites and stalagmites, as well as other impressive formations, such as flowstones and scallops (sculpted indentations caused by water flow). Following a heavy Irish downpour, the caves are prone to flooding, so do check before you visit.