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19 giant infrastructure projects that could reshape the world

Business Insider Logo By Chris Weller of Business Insider | Slide 1 of 20: <p>The world is full of unfathomably huge projects happening right under our noses.</p><p> Take the Hong Kong-Zhuhai-Macau Bridge, which will link <a href="http://www.businessinsider.com/chinese-mega-city-has-more-people-than-canada-argentina-or-australia-2015-7?utm_source=msn.com&amp;utm_medium=referral&amp;utm_content=msn-slideshow&amp;utm_campaign=bodyurl"> three major Chinese cities</a> in the country's quest to bring 42 million people together. Or Norway's plan to build <a href="http://www.businessinsider.com/norway-might-get-floating-underwater-tunnel-2016-7?utm_source=msn.com&amp;utm_medium=referral&amp;utm_content=msn-slideshow&amp;utm_campaign=bodyurl"> the world's first fully-submerged floating tunnel</a> to cut travel times between fjords in half.</p><p> Those efforts and many others illustrate how investing billions of dollars in enormous projects can collectively make the world a better place to live.</p><p> Here are some of the biggest projects the world has seen so far.</p>

The world is full of unfathomably huge projects happening right under our noses.

Take the Hong Kong-Zhuhai-Macau Bridge, which will link three major Chinese cities in the country's quest to bring 42 million people together. Or Norway's plan to build the world's first fully-submerged floating tunnel to cut travel times between fjords in half.

Those efforts and many others illustrate how investing billions of dollars in enormous projects can collectively make the world a better place to live.

Click ahead to see some of the biggest projects the world has seen so far.

© Zaha Hadid Architects

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