The Darwin D. Martin House Complex is a historic house museum in Buffalo, New York. The property's buildings were designed by renowned architect Frank Lloyd Wright and built between 1903 and 1905. The house is considered to be one of the most important projects from Wright's Prairie School era. History The Martin House Complex was built for businessman Darwin D. Martin, his wife, and their family; and his sister Delta and her husband George F. Barton. Martin and his brother, William E. Martin, were co-owners of the E-Z Stove Polish Company based in Chicago. In 1902 William commissioned Wright to build him a home in Oak Park, Illinois, the resultant William E. Martin House built in 1903. Upon viewing his brother's home, Darwin Martin was significantly impressed to visit Wright's Studio, and persuaded Wright to view his property in Buffalo, where he planned to build two houses. In 1904, Martin was instrumental in selecting Wright as the architect for the Larkin Administration Building, in downtown Buffalo, which was Wright's first major commercial project. Martin was the secretary of the Larkin Soap Company and consequently Wright designed houses for other Larkin employees William R. Heath and Walter V. Davidson. Wright also designed the E-Z Stove Polish Company's Factory built in 1905. Wright designed the complex as an integrated composition of connecting buildings, consisting of the primary building, the Martin House, a long pergola connecting with a conservatory, a carriage house-stable, and a smaller residence, the George Barton House, built for George F. Barton and his wife Delta, Martin's sister. The complex also includes a gardener's cottage, the last building completed. Martin, disappointed with the small size of the conservatory, had a 60 ft (18m) long greenhouse constructed between the gardener's cottage and the carriage house, to supply flowers and plants for the buildings and grounds. This greenhouse was not designed by Wright, and Martin ignored Wright's offer "to put a little architecture on it". Over the next twenty years a long-term friendship grew between Wright and Martin, to the extent that the Martins provided financial assistance and other support to Wright as his career unfolded. About twenty years later, in 1926, Wright designed the second major complex for the Martin family, Graycliff, a summer estate overlooking Lake Erie in nearby Derby, New York. The Blue-Sky Mausoleum Wright designed for the Martins in 1928, but never built, was finally installed at Buffalo's