When the new Museum of History and Technology (later renamed the National Museum of American History) was planned, architects designed a special Flag Hall for the Star-Spangled Banner. The design meant that the flag was prominently placed in the new building's central hall. And for the first time since arriving at the Smithsonian, the flag was hung vertically and displayed in its entirety.  Using scaffolding, workers carefully hoisted the flag into position in Flag Hall and attached it to a custom frame made of aluminum tubing and mesh.  Back to top Artist's rendering of Flag Hall in the new Museum of History and Technology, 1960s. Smithsonian Institution The flag is 30-x-34 feet--close to three stories high. It weighed about 150 pounds (68 kg.) with its linen backing.