Exterior of Museum of History and Technology, by Bremer, Sandy, 1976, Smithsonian Archives - History Div, Mall facade of the National Museum of History and Technology, now the National Museum of American History, showing horticultural plantings in the foreground, August 12, 1976. The Infinity sculpture, installed in 1967, is visible in the background, as well as the wooden awning structures designed a few years after the building's completion to provide shade for visitors. There are signs directing visitors for "A Nation of Nations" to the side of the building..