While the official criteria for a megastructure may be up for debate, they all have one thing in common: they are massive engineering undertakings and can take years upon years to complete, as well as billions of dollars. But if city planners, architects, designers, and scientists don’t look to the future, then who will? And while structures like, say, the Egyptian pyramids or the Great Wall of China have managed to withstand the time and continue to remain marvels of human ingenuity, there are plenty of megastructures today that will leave your jaw on the floor. And you can’t forget about all of the proposed megaprojects, some of which are quite literally out of this world. So join us for today’s video, where we take a look at the top 15 incredible megastructures! #megastructures #top15 Several segments are licensed under creative commons https://creativecommons.org/licenses/by/3.0/legalcode For more video information, please visit our website. The Top Fives show brings you informational and entertaining top five videos! Join us and subscribe for more. Follow Josh on Instagram! Founder and producer of the Top Fives show. Stay up to date with the channel and everything YouTube and business related! https://instagram.com/joshuajosephbaker Follow us on Facebook! https://facebook.com/topfivesyoutube Contact us via the email form here: null Note: The videos featured on the Top Fives channel are for educational and informational purposes. If you have a good idea for a video, leave us a comment! We try to read each and every comment made.