Be one of the first 500 people to sign up with this link and get 20% off your subscription with Brilliant.org! https://brilliant.org/realengineering/ New streaming platform: https://watchnebula.com/ Vlog channel: https://www.youtube.com/channel/UCMet4qY3027v8KjpaDtDx-g Patreon: https://www.patreon.com/user?u=2825050&ty=h Facebook: http://facebook.com/realengineering1 Instagram: https://www.instagram.com/brianjamesmcmanus Reddit: https://www.reddit.com/r/RealEngineering/ Twitter: https://twitter.com/thebrianmcmanus Discord: https://discord.gg/s8BhkmN Get your Real Engineering shirts at: https://standard.tv/collections/real-engineering Credits: Writer/Narrator/Camera Operator: Brian McManus Editor/Camera Operator: Stephanie Sammann (https://www.stephanie-sammann.com/) Animator: Mike Ridolfi (https://www.moboxgraphics.com/) Sound: Graham Haerther (https://haerther.net/) Thumbnail: Simon Buckmaster https://twitter.com/forgottentowel References: [1] https://design-technology.org/archbridges.htm [2] https://memetician.livejournal.com/201202.html [3] https://blog.sagradafamilia.org/en/divulgation/where-do-the-stones-being-used-to-build… [4] https://blog.sagradafamilia.org/en/divulgation/montjuic-stone/ [5] https://blog.sagradafamilia.org/en/the-trades/model-makers/ [6] https://www.architectmagazine.com/technology/a-completion-date-for-sagrada-familia-helped-by-technology_o Thank you to AP Archive for access to their archival footage. Music by Epidemic Sound: http://epidemicsound.com/creator Songs: Unpainted Canvas - David Celeste Who's There - Peter Sandberg Stay Near - Luwaks Weathered Eyes - Alec Slayne By Lake Surprise - Clarence Reed Life in Color - Philip Ayers What Might Have Been - Francis Wells Thank you to my patreon supporters: Adam Flohr, Henning Basma, Hank Green, William Leu, Tristan Edwards, Ian Dundore, John & Becki Johnston. Nevin Spoljaric, Jason Clark, Thomas Barth, Johnny MacDonald, Stephen Foland, Alfred Holzheu, Abdulrahman Abdulaziz Binghaith, Brent Higgins, Dexter Appleberry, Alex Pavek, Marko Hirsch, Mikkel Johansen, Hibiyi Mori. Viktor Józsa, Ron Hochsprung