London can be rainy, or it can be sunny. Some of the buildings are very old, while other ones are quite new. Explore opposites through the sights of London in this gorgeous board book! Hello, World is an exciting board book series that pairs early learning concepts with colorful, stylish illustrations of cities around the world. London can be rainy, or it can be sunny. Some Buckingham Palace guards are big, and others are little. Explore opposites through the sights of London in this gorgeous board book!