The American Craftsman style has its roots in the early 20th century. Charles Sumner Greene (1868 –1957) and Henry Mather Greene (1870 – 1954) popularized the style which was especially prominent in California. The style is characterized by its low-pitched gabled roofs with broad eaves, large front porches, and exposed wooden structural elements. The Greene brothers worked together from 1893 – 1914 and began making this particular style of home around 1903. One of the most famous examples of their work in the American Craftsman style is the Gamble House located in Pasadena, California. The house was designated as a National Historic Landmark in 1977. The Greene brothers did not stop there, however. Other examples of their American Craftsman work can be found in the Robert R. Blacker House and the William R. Thorsen House. The Robert Blacker House is located in Pasadena as well, and cost $100,000 at the time of construction (over $2.5 million today). The William Thorsen House is located in Berkley, California and, according to the Director of the Gamble House, Edward Bosley, the Thorsen House is “an elegant temple of high art-craft.” The American Craftsman architectural style has been popular for along time and it is no secret why!