Keystone Explained

Keystone Explained shows the engineering hiding in plain sight, in under a minute.

Why do skyscrapers sway? Why are train wheels shaped like cones? What stops a dam from bursting? Short, accurate answers about bridges, tunnels, dams, machines, materials and the clever design rules that keep the world standing.

Got a structure you've always wondered about? Ask in the comments.

Made with synthetic narration and a mix of stock footage and AI-generated illustrations. Every script is fact-checked by a person before it is posted.