Which large system of basalt columns in County Antrim was designated a World Heritage Site by UNESCO in 1968? Answer : Giant’s Causeway/Clochán an Aifir More Questions on Ireland Facebook Twitter WhatsApp Linkedin ReddIt Email Print Telegram Posted in : Ireland Must Read Questions Which lake in Northern Ireland is the largest body of water in the British Isles? Double question: what is the national airline of the Republic of Ireland, and which is the country’s biggest airline? At 225 miles, what is the longest river in Ireland? Which stringed instrument can be seen on the coat of arms of Ireland, and on the logo of a major brewery? Which Irish novelist is most well-known for Ulysses, published in 1922? Popular Questions Similar Questions What name is given to wailing female spirits of Irish mythology? Which fifth-century missionary and bishop from Great Britain is the patron saint of Ireland? Which is by far the best selling Irish Whiskey in the world? What are the two capital cities on the island of Ireland? In which sport(s) is the aim to hit a ball either through or over an opposition’s posts using a wooden stick?