Saudi Arabia breaks ground on $50B Mukaab, the ‘world’s largest building’ — which can hold 20 Empire State Buildings

It’s an out-of-the-box undertaking. What is expected to be the “world’s largest building” has officially broken ground in Saudi Arabia. The ambitious $50 billion project — called The Mukaab — in capital city Riyadh is part of a wave of futuristic construction across the Arab nation, the Sun reported. A rendering of the massive Mukaab,…