A scale model of everything
This page is 4.54 billion years tall, drawn strictly to scale. Scroll down to fall through the entire history of the Earth — from now, at the surface, to the forming of the planet, at the bottom.
Every geologic boundary below sits at its true proportional depth. Everything you have ever heard of — every animal with a backbone, every forest, every human — happens in the top tenth. That is the point of scale, and most timelines quietly cheat it. This one does not.