THE Duke of Edinburgh, whose death was announced today, officially opened the i360 five years ago - and memorably described the attraction as "terrible". True to form, Prince Philip entertained assembled guests, staff and the public as he officially opened the 162-metre building on October 25, 2016. When i360 chairman David Marks told a crowded room it was an honour to see His Royal Highness open the tallest moving observation tower, the 95-year-old quipped: "It's been open. Maybe today it is more open than usual." Laughter erupted among guests including i360 bosses and staff at the joke, which appeared to suggest he knew of the technical problems which befell the attraction in its opening months.