Officially christened, Unión de la Expresión Artistica del Norte y Sur de este Continente (The Marriage of the Artistic Expression of the North and of the South on this Continent), this is the final fresco that Diego Rivera painted in San Francisco and the whole of the United States.
Now commonly referred to as Pan American Unity, the fresco is a commanding 22-feet (6.7 m) high and 74-feet (22.5 m) long.
Rivera created it during a 1940 World’s Fair that was held on Treasure Island in the San Francisco Bay. Twenty-one years later, it took up permanent residence in the lobby of the Diego Rivera Theatre at the City College of San Francisco.
Public viewing hours vary and are posted online