The V3 London gun was designed as revenge weapon by Germany and designed to be permanently aimed at London 100 miles away. If fully built this would have been the longest gun in history. With a barrel over 440 feet long, that could hurl projectiles at speeds in excess of Mach 4. The Germans were built a huge underground complex in Northern France that was designed to house 25 of these guns to ensure a continuous bombardment of London. You can visit during the summer months https://www.mimoyecques.fr/Support us on Patreon for exclusive perks and help us create more content / bluepawprint Check out our exclusive merch https://yarnhub-shop.fourthwall.com00:00 Intro01:01 General gun design02:58 Shell05:27 Firing sequence07:34 Underground complex11:57 Reloading the weapon14:12 Logistics14:54 Shortcomings and bombing16:46 Demolition18:39 Conclusion and legacy19:03 Museum