A significant development has emerged regarding what was tipped to become the world's largest building – a structure so immense it could reportedly accommodate 20 Empire State Buildings within its walls. The Mukaab project, a gigantic cube planned to dominate a new district in Saudi Arabia's capital, Riyadh, was conceived as a revolutionary take on the skyscraper, but hopes of seeing it realised may now be fading. The ambitious design called for a structure measuring 400 metres in height and