Engineers have been creating amazing structures for thousands of years. From the wonders of the ancient world to the International Space Station, they have applied science and technology to design buildings and structures that stand the test of time. With clear text, vivid photos and helpful diagrams, Building by Design introduces readers to some of these structures and how they were created. The New York City Subway System has been carrying passengers for more than a century. Engineering the NYC Subway System explores how designers drew up plans for the subway, how workers built the underground system in one of the world's busiest cities, and how commuters still rely on its hundreds of trains today. Easy-to-read text, vivid images, and helpful back matter give readers a clear look at this subject. Features include a table of contents, infographics, a glossary, additional resources, and an index. AGES: 9 to 10 SELLING POINTS: ? Table of contents ? Glossary ? Index ? Primary sources with accompanying questions ? Fast facts ? Book and online resource list