World Records — The Mukaab

The Mukaab is projected to set multiple world records upon completion, spanning architectural scale, engineering achievement, and technological innovation. This tracker catalogs the records the building will claim, the current record holders it will surpass, and the margin of achievement in each category.

Confirmed Records

World’s Largest Building by Volume Record to break: Boeing Everett Factory (13.4 million m³) Mukaab: 64 million m³ Margin: 4.8x the current record

World’s Largest Structural Steel Order (Single Building) Order: 1 million tonnes of structural steel Value: Approximately $1 billion Previous comparable: No single building has required steel at this scale

World’s First Enclosed Skyscraper The spiral tower within the cube constitutes the first fully enclosed skyscraper — a building that exists entirely within another building, protected from all external weather conditions.

World’s Largest Raft Foundation The foundation covering the 400m x 400m footprint (160,000 sqm) will be the largest continuous raft foundation ever constructed.

World’s Largest Immersive Experiential Destination The holographic dome system represents the largest installation of holographic and VR projection technology within a single structure.

World’s Largest Cube-Shaped Structure At 400m per side, the Mukaab will be by far the largest cube-shaped building ever constructed. No previous cube-form building approaches this scale.

Projected Records

Largest Building by Floor Area (Contested) The Mukaab’s 2 million square meters would exceed the New Century Global Center’s 1.76 million square meters, though the exact floor area count depends on how the building’s large atrium and void spaces are classified.

Most Expensive Single Building (Contested) The Mukaab’s share of the $50 billion New Murabba investment likely makes it the most expensive single building ever constructed, though exact building-specific costs have not been disclosed.

Record Context and Significance

Each record the Mukaab claims represents not merely a numerical superlative but a categorical expansion of what building technology can achieve. The distinction matters because some records are incremental — a building one meter taller than its predecessor — while others represent generational leaps that redefine the frontier of construction.

The volume record exemplifies this distinction. The Boeing Everett Factory has held the volume record since 1967 — nearly six decades. The Mukaab would break this record not by a modest margin but by a factor of nearly five, from 13.4 million to 64 million cubic meters. This magnitude of record-breaking has no precedent in the “largest building by volume” category. When the Boeing factory claimed the record from the previous holder, the margin was substantial but not fivefold. The Mukaab’s volume achievement represents a step change in enclosed architecture that is more analogous to the transition from propeller aircraft to jet aircraft than to the incremental speed improvements between successive jet models.

The structural steel record similarly represents a categorical leap. No previous single building has approached 1 million tonnes of structural steel. The Burj Khalifa required 31,000 tonnes. The Empire State Building required approximately 60,000 tonnes. The Pentagon required approximately 100,000 tonnes. The Mukaab’s 1 million tonnes exceeds the previous largest orders by an order of magnitude, requiring supply chain mobilization — multiple fabrication facilities across multiple countries, dedicated shipping logistics, and multi-year delivery schedules — that transforms a building material order into an industrial infrastructure program.

Records as Economic Assets

World records generate direct economic value through tourism, media exposure, and brand recognition. The Burj Khalifa’s observation deck — marketed as the world’s highest observation platform — generates approximately $180 million in annual ticket revenue, making the “tallest building” record a revenue-producing asset. The Great Wall of China, the Grand Canyon, Niagara Falls, and other record-holding natural and constructed features demonstrate that “world’s largest,” “world’s tallest,” and “world’s first” designations drive tourism traffic measured in millions of annual visitors.

The Mukaab’s portfolio of records — largest by volume, largest steel order, first enclosed skyscraper, largest raft foundation, largest immersive experiential destination, largest cube-shaped structure — creates multiple tourism hooks that appeal to different visitor segments. Architecture enthusiasts visit for the structural achievement. Technology enthusiasts visit for the holographic dome and immersive systems. Record chasers visit simply to experience the world’s largest building. This multiplicity of record claims broadens the visitor demographic beyond what any single record would attract.

The economic value of these records compounds with the 90 million annual visitation target. Each visitor attracted by the building’s record-holding status spends on hotel rooms, retail, dining, and entertainment within the development, generating GDP contribution that extends far beyond the direct tourism revenue from admission fees or observation deck tickets.

Records Dependent on Technology Development

Several of the Mukaab’s projected records depend on technologies that must be developed or scaled specifically for this project. The “largest immersive experiential destination” record depends on the successful deployment of the holographic dome at a scale — 300 meters — that no existing holographic or projection system has achieved. The “first enclosed skyscraper” record depends on the spiral tower achieving the structural and environmental conditions necessary for a fully interior high-rise experience.

These technology-dependent records carry inherent uncertainty. If the holographic dome technology is scaled back from its originally specified parameters, the “largest immersive experiential destination” claim may require qualification. If the spiral tower’s interior conditions prove unable to fully replicate outdoor building conditions, the “enclosed skyscraper” designation may face definitional challenge.

The smart building systems planned for The Mukaab — AI-driven climate control, IoT sensor networks, autonomous transportation — may establish additional records in building technology categories that did not exist when the project was announced. As the building nears completion, these emerging technology records could become significant differentiators in their own right.

The Verification Challenge

World records in the “largest building” category are historically difficult to verify because building dimensions can be measured in multiple ways, and the criteria for comparison are not always standardized. Volume can be calculated as gross exterior volume (the cube’s geometric volume of 64 million cubic meters) or as net enclosed habitable volume (which would be smaller after subtracting structural members, facade thickness, and uninhabitable void spaces). Floor area can be measured as gross floor area, net lettable area, or gross building area — each yielding different figures.

The Mukaab’s record claims will require independent verification by recognized authorities — Guinness World Records, the Council on Tall Buildings and Urban Habitat (CTBUH), and architectural measurement standards bodies. The CTBUH, which maintains the definitive database of supertall and megatall buildings, uses specific measurement protocols for height (to architectural top, to highest occupied floor, to tip of antenna) that must be applied consistently. Extending similar rigor to volume and floor area measurements will be essential for the Mukaab’s record claims to achieve the credibility that supports their marketing and economic value.

The timing of verification also matters. Record claims made at the announcement stage carry less weight than those verified upon completion. The current tracker presents these records as “projected” rather than “confirmed,” reflecting the distinction between announced specifications and delivered reality. Upon completion, independent measurement and verification will either confirm or qualify each claim — a process that every previous record-holding building has undergone.

The Competitive Landscape for World Records

The Mukaab’s record claims do not exist in a vacuum. Other projects under development worldwide may challenge some of these records before The Mukaab’s completion, particularly given the extended timeline following the 2026 reassessment.

In the “largest building by volume” category, no announced project currently threatens the Mukaab’s 64 million cubic meter projection. The next-largest building by volume — the Boeing Everett Factory at 13.4 million cubic meters — has held the record since 1967, and no competitor is under construction. This record appears secure.

In the “largest building by floor area” category, the competition is closer. The New Century Global Center’s 1.76 million square meters could theoretically be surpassed by a Chinese or Gulf development before The Mukaab reaches completion. However, no announced project currently targets this record, and the Mukaab’s 2 million square meters provides a margin of approximately 14 percent that would require a very large competing building to surpass.

In the “tallest building” category, the Mukaab does not compete — at 400 meters, it is shorter than the Burj Khalifa’s 828 meters and the planned Jeddah Tower’s 1,000+ meters. The Mukaab’s records are in volume and enclosed space rather than height, positioning it in a different competitive category from the traditional supertall tower competition.

Potential Additional Records

Beyond the confirmed and projected records listed above, The Mukaab may establish additional records in categories that reflect its unique characteristics.

World’s Largest Indoor Garden — If the spiral tower’s rooftop garden and interior landscaping achieve the scale indicated in design renderings, the building could claim the record for largest indoor garden or green space within a single structure.

World’s Largest Building by Structural Weight — At 1 million tonnes of steel plus concrete, foundations, facades, and interior materials, the Mukaab’s total structural weight may exceed any previous building. While no formal record category exists for structural weight, the metric illustrates the building’s unprecedented material consumption.

World’s Largest Mixed-Use Building — While the New Century Global Center combines multiple uses, the Mukaab’s combination of ten or more distinct programmatic functions — hospitality, retail, entertainment, cultural, educational, residential, office, immersive technology, sports (in the broader development), and public art — would represent the most diverse programmatic mix within a single building structure.

World’s Largest Smart Building — The integration of AI climate control, IoT sensor networks, autonomous transportation, and centralized data analytics across 2 million square meters of floor area would create the largest AI-managed building in the world, a record that carries commercial value as smart building technology becomes a key differentiator in premium real estate markets.

Records as Marketing Infrastructure

The concentration of world records within a single building creates a marketing asset of extraordinary value. Each record provides a distinct media narrative — “world’s largest building,” “world’s largest steel order,” “world’s first enclosed skyscraper” — that generates news coverage, social media engagement, and travel feature content. The multiplicity of records ensures that the Mukaab offers fresh content angles for media coverage over years, maintaining public interest through a longer cycle than a single-record building could sustain.

Tourism marketing research demonstrates that “world’s largest” and “world’s tallest” designations drive measurable visitor traffic independent of the destination’s other attributes. The Burj Khalifa’s observation deck attracts visitors who travel to Dubai specifically for the “tallest building” experience. The Great Wall of China attracts visitors motivated primarily by the “longest structure” record. Niagara Falls attracts visitors for the “largest waterfall” experience. These record-driven visitors represent incremental demand that would not exist without the superlative designation.

If The Mukaab’s portfolio of records collectively drives even 5 percent incremental visitation above what the development’s amenities alone would attract — representing 4.5 million additional visitors against the 90 million annual target — the revenue impact at average visitor spending levels would reach hundreds of millions of dollars annually. This economic value transforms world records from architectural trivia into commercially significant assets that contribute directly to the project’s $47 billion GDP impact and the PIF’s investment returns.

The Record-Holding Building as National Asset

World record-holding buildings function as national assets that contribute to their country’s global brand, tourist economy, and cultural identity. France’s Eiffel Tower, completed in 1889, remains the country’s most recognized architectural symbol — generating approximately 300 million euros in annual economic activity for Paris and serving as an icon that communicates French elegance and engineering prowess to a global audience. The Statue of Liberty functions similarly for the United States — a gift from France that became an enduring symbol of American identity and a tourism magnet generating billions in economic activity for New York City.

The Mukaab’s potential to function as Saudi Arabia’s equivalent architectural national asset is substantial. No single building currently serves this role for the Kingdom — the Makkah Clock Tower is associated specifically with religious pilgrimage rather than national identity, and no other Saudi building carries global recognition comparable to the Eiffel Tower, the Burj Khalifa, or the Sydney Opera House. The Mukaab, with its unprecedented cube form, Najdi architectural heritage connection, and portfolio of world records, is positioned to fill this gap — becoming the building that represents Saudi Arabia in the global imagination for generations.

World Records — The Mukaab