International Spy Museum

This guide to the International Spy Museum in Washington, D.C. follows businessman and former Korean War code breaker Milton Maltz, who personally guaranteed tens of millions of dollars to build the museum's current home without city funding. It traces how the museum's team bought the air rights above an L'Enfant Plaza food court and built an eight-story building straight up through it. Look for the sloped red columns and the suspended glass staircase called the Veil as you listen for how the engineering was made to work.