Have you ever wondered how skyscrapers became possible? Without Elisha Otis, the towering cities we know today would not exist. In the mid-1800s, buildings were rarely taller than a few stories because climbing endless flights of stairs was simply too exhausting. Elevators existed, but they were incredibly dangerous; if the hoisting rope snapped, the elevator crashed to the ground. Elisha Otis knew there had to be a way to make vertical travel perfectly safe. You will read about his brilliant invention of the safety brake, a clever mechanism that locked the elevator in place if the rope ever failed. Discover the dramatic moment he demonstrated his invention at a major exhibition, standing high in the air and ordering the rope to be cut! Learn how one man's brilliant idea completely changed architecture, allowing humanity to build massive cities that scrape the sky.