Since 1963, the Graham Foundation has been located in the Madlener House, a 9,000 square foot Prairie-style mansion located in the historic Gold Coast neighborhood of Chicago. The work of architect Richard E. Schmidt and designer Hugh M. G. Garden, the house was built in 1901–02 for Albert Fridolin Madlener and his wife Elsa Seipp Madlener, both of whom came from prominent pioneer Chicago families that emigrated from Germany in the 1850s. In its compact, cubic massing the house is related to the German neoclassical work of Karl Friedrich Schinkel and his followers in Berlin, but in many of its details it clearly reveals the influence of Louis Sullivan and Frank Lloyd Wright.