Behind every seemingly-impossible marvel of modern engineering is a cast of trailblazers who pioneered new building techniques that made it all possible. Featured are the Haley VI Antarctica Ice Base and the International Space Station.

Behind every seemingly impossible marvel of modern engineering lies a cast of trailblazers who pioneered new building techniques that made it all possible. Featured are U.S. Navy's Littoral Combat Ships and the Perdido Oil Platform in the Gulf of Mexico.