We are independent & ad-supported. We may earn a commission for purchases made through our links.

Advertiser Disclosure

Our website is an independent, advertising-supported platform. We provide our content free of charge to our readers, and to keep it that way, we rely on revenue generated through advertisements and affiliate partnerships. This means that when you click on certain links on our site and make a purchase, we may earn a commission. Learn more.

How We Make Money

We sustain our operations through affiliate commissions and advertising. If you click on an affiliate link and make a purchase, we may receive a commission from the merchant at no additional cost to you. We also display advertisements on our website, which help generate revenue to support our work and keep our content free for readers. Our editorial team operates independently from our advertising and affiliate partnerships to ensure that our content remains unbiased and focused on providing you with the best information and recommendations based on thorough research and honest evaluations. To remain transparent, we’ve provided a list of our current affiliate partners here.

What is the World's Largest Building?

Michael Anissimov
By
Updated May 21, 2024
Our promise to you
All The Science is dedicated to creating trustworthy, high-quality content that always prioritizes transparency, integrity, and inclusivity above all else. Our ensure that our content creation and review process includes rigorous fact-checking, evidence-based, and continual updates to ensure accuracy and reliability.

Our Promise to you

Founded in 2002, our company has been a trusted resource for readers seeking informative and engaging content. Our dedication to quality remains unwavering—and will never change. We follow a strict editorial policy, ensuring that our content is authored by highly qualified professionals and edited by subject matter experts. This guarantees that everything we publish is objective, accurate, and trustworthy.

Over the years, we've refined our approach to cover a wide range of topics, providing readers with reliable and practical advice to enhance their knowledge and skills. That's why millions of readers turn to us each year. Join us in celebrating the joy of learning, guided by standards you can trust.

Editorial Standards

At All The Science, we are committed to creating content that you can trust. Our editorial process is designed to ensure that every piece of content we publish is accurate, reliable, and informative.

Our team of experienced writers and editors follows a strict set of guidelines to ensure the highest quality content. We conduct thorough research, fact-check all information, and rely on credible sources to back up our claims. Our content is reviewed by subject matter experts to ensure accuracy and clarity.

We believe in transparency and maintain editorial independence from our advertisers. Our team does not receive direct compensation from advertisers, allowing us to create unbiased content that prioritizes your interests.

The largest building in the world, according to the Guinness Book of World Records, is Boeing's Everett Plant, located in Everett, Washington, in the US. The famous passenger aircraft, the 747, 767, and 777 are assembled there. When constructed in 1968, the Everett Plant boasted 5.64 million m³ (200 million cu ft) of usable floor space. Since then, it has been expanded twice, 45 percent in 1980 for the 767 assembly line, and another 50 percent in 1993 for 777 assembly. The site's total footprint is 1,025 acres (415 hectares), with 282 acres (113 hectares) of building area, and 215 acres (86 hectares) for paved yards and parking. This makes the world's largest building's area equivalent to a little over a square kilometer.

Many of the world's largest buildings have to do with the assembly of aircraft or spacecraft. For example, the Aerium, in Brandenburg, Germany, about half the size of the Everett plant, was originally constructed as the assembly area for a giant airship which was never built. The NASA Vehicle Assembly Building, in Florida, is about a third the size of the Everett Plant, as was built to assemble the space shuttles.

There are several buildings a bit larger than the Everett Plant, but generally are not given credit because not all their floor space is usable. For example, the Aalsmeer Flower Auction, Aalsmeer, the Netherlands, is a bit larger, but not all its floorspace is usable, ranking it lower than the Everett Plant. It is still qualified as the world's largest building for commercial (as opposed to industrial) use, and by a long shot the world's largest building devoted to flower auctions.

The Great Wall of China and China's Three Gorges Dam are two other structures that challenge the Everett Plant for the world's largest building status. The Great Wall of China is over 6,500 km long, but doesn't qualify as a building because it has no interior and little real usable space. Similar, the Three Gorges Dam does not qualify as a building per se because the vast majority of its interior is not usable in the fashion that is usually meant by "building."

All The Science is dedicated to providing accurate and trustworthy information. We carefully select reputable sources and employ a rigorous fact-checking process to maintain the highest standards. To learn more about our commitment to accuracy, read our editorial process.
Michael Anissimov
By Michael Anissimov , Writer
Michael Anissimov is a dedicated All The Science contributor and brings his expertise in paleontology, physics, biology, astronomy, chemistry, and futurism to his articles. An avid blogger, Michael is deeply passionate about stem cell research, regenerative medicine, and life extension therapies. His professional experience includes work with the Methuselah Foundation, Singularity Institute for Artificial Intelligence, and Lifeboat Foundation, further showcasing his commitment to scientific advancement.

Discussion Comments

By anon75256 — On Apr 06, 2010

The NASA Vehicle Assembly building, completed in 1965, was built to integrate the Apollo V launch vehicle.

By anon44636 — On Sep 09, 2009

- anon13305, regarding your question about percentage of used floor space. As someone who works at the Everett plant, trust me- every square inch is used for something.

By catapult43 — On Jun 03, 2008

Anon9164 & Anon13305 - Maybe I'm misreading or something, but the first paragraph provides the largest building in square units and doesn't restrict itself to usable floor space. I think both your comments are addressed in the last two sentences of the first paragraph.

As for Beijing's claim, it does seem that new airport space was built in February 2008 in anticipation for the 2008 Olympic Games. But, I'm not finding figures on the actual size of that airport building.... I did find an article that says it (Terminal 3) is the largest building in the world, noting that it's twice the size of the Pentagon. And, it seems that the Pentagon is 6,500,000 square feet (or just under 150 acres). So double is just under 300 acres, and the Boeing building is 282 acres. So perhaps it is now the largest building in the world?

By anon13305 — On May 24, 2008

Useable floor space is too restrictive a qualifier to the term 'largest. You have to qualify 'largest' as area or volume of building because and any other qualifier is too restrictive to be practical and usable space would imply the the building could not be modified for use over time which is not the case.

An unused floor should be included as - unused floor space and many big building are not 100% used in many cases. What % of a industrial plant is actually used?

By anon9164 — On Feb 29, 2008

building area is not measured in cubic dimensions (feet or meters), but square units. Also, what about Beijings claim that their building is the world's biggest?

Michael Anissimov

Michael Anissimov

Writer

Michael Anissimov is a dedicated All The Science contributor and brings his expertise in paleontology, physics, biology...
Learn more
All The Science, in your inbox

Our latest articles, guides, and more, delivered daily.

All The Science, in your inbox

Our latest articles, guides, and more, delivered daily.