Buildings (X-treme Facts: Engineering)

Have you heard of houses built to look like flying saucers? And did you know the first skyscraper ever built was in Chicago? But that certainly wasn't the first big building--it came after the monumental pyramids of ancient Egypt, the huge castles of medieval times, and more. All these buildings are marvels of engineering! Discover extreme facts about bridges in this fun and kooky book.