People are flocking to a new boardwalk extension described as the “final piece of the puzzle” linking Hong Kong Island’s 13km (8-mile) promenade, marking the end of 16 years of planning and construction. A glass observatory deck was among the features of the new 1.1km North Point extension that drew the most attention on Monday, but some visitors said they wished the new attraction were larger. Ivan Ho Man-yiu, chairman of the Harbourfront Commission, said that the opening of the eastern section...