"Madeline in London" is a children's book written by Ludwig Bemelmans. It follows the adventures of Madeline, a brave and spirited girl who travels to London with her friends from the Old House in Paris. In this story, Madeline and her companions explore famous landmarks, including Big Ben and Buckingham Palace. The tale highlights themes of friendship, courage, and the joy of discovering new places, all while maintaining the charming illustrations and rhyming text characteristic of the Madeline series.