The Grand Egyptian Museum, which will house more than 100,000 artefacts and monuments from the pharaonic era, is to be inaugurated in 2015, Antiquities Minister Mohamed Ibrahim said Tuesday. It is considered to be the world\'\'s largest museum. Work on the third and final stage has started and will take up to three-and-a-half years and cost 300 million dollars, the minister said. The 5-billion-Egyptian-pound (828-million-dollar) project is being built on 117 acres of land on the outskirts of Cairo.