In one of the most ambitious architectural projects ever attempted, Saudi Arabia has officially begun construction on the Mukaab, the world’s largest cube-shaped building. Towering at an awe-inspiring 400 meters in height and 400 meters in width, this colossal megastructure is set to become a defining icon of modern urban design.
To put its size into perspective, the interior of the Mukaab is spacious enough to fit 20 Empire State Buildings a scale so massive that global architects are calling it one of the most daring engineering undertakings of the 21st century.
The Mukaab is the signature centerpiece of the New Murabba development, a futuristic downtown district forming a crucial part of Saudi Arabia’s Vision 2030 plan. With an estimated investment of $50 billion, the project aims to transform Riyadh into a world-leading hub for tourism, technology, culture, and sustainable urban living.
Designed with advanced geometric triangular panels and infused with next-generation engineering, the Mukaab will feature an immersive interior world unlike anything built before. At its core will stand a large internal observation tower, surrounded by hotels, retail spaces, entertainment arenas, residential units, and digital experiences powered by cutting-edge mixed-reality technologies.
Urban planners say the Mukaab will redefine how skyscrapers are imagined—moving beyond traditional vertical design into bold, volumetric architecture that blends culture, innovation, and futuristic aesthetics. Once completed, the cube-shaped giant is expected to reshape Riyadh’s skyline and become one of the most recognizable landmarks on the planet.
Construction has officially begun, marking the start of a new chapter in Saudi Arabia’s architectural evolution. As work progresses, the world will be watching closely as this unprecedented mega-project takes shape.
