The Saudi government has undertaken several projects in recent years to facilitate pilgrims and ensure their safety during Haj. As the pilgrims stream into Mecca for the annual Haj pilgrimage, they come to a city undergoing one of the most ambitious overhaul ever with a series of mega-projects that, though incomplete, have already reshaped the city. Next to the Kaaba stands the world's third tallest skyscraper, topped by a gigantic clock, which is splashed with coloured lights at night.