But is it really a building? Or is is more of a shed? Interesting fact: The biggest building in the world under most categories is the Boeing Everett facility in Washington State here in the US. This building claims to be the outright biggest of the world’s biggest buildings due to its mammoth volume coupled by is sq footage and overall landscape size. So overall on average, this is the biggest building. <br><br>The US is home to many fantastically huge buildings infact. My town alone now has 3 buildings that have a floor area of over 1 Million sq ft. (92,950.62 m²) The US along with Australia is also home to the biggest homes on average too. <br><br>This is mainly due to the fact that land unlike European countries isn't at a premium. And not far from me is the Willis Tower (which has 4.5 Million sq ft making it bigger than the Burj Khalifa) And the 4th 5th and 6th largest buildings in the world by foot print are all not far from Chicago as well. :D,(reply>), Koen, why did you claim he was mocking Europe, then go on to try and attack any legitimate point he made with "But hurr durr England did this better". You may have worded your responses relatively eloquently, but in the end you're the one being childish and mocking here,(reply>), Aiden Marcelis It’s surprising considering the fact that the internet has loads of trolls and keyboard warriors,many different annoyances.,(reply>), <b>M I N D B L O W</b>,(reply>), Aiden Marcelis it is also one of the most long winded ones,(reply>), Scootaloo those 2 guys are the nicest arseholes in the entire universe