Rapunzel grew to be the most beautiful child under the sun. But when she was twelve years old, the sorceress locked her in a tower that was in a forest. It had neither door no stairs, only a little window high above. Whenever the sorceress wanted to get in, she would stand below and call out:
    "Rapunzel, Rapunzel,
    let down your hair for me."
    Rapunzel's hair was long and radiant, as fine as spun gold. Every time she heard the voice of the sorceress, she unpinned her braids and wound them around a hook on the window. Then she let her hair drop twenty yards, and the sorceress would climb up on it. 
    From: The Complete Fairy Tales of the Brothers Grimm