This is a picture of a Darth Vader sculpture that serves as a gargoyle on the National Cathedral in Washington, DC. According to their site:
In the 1980s, while the west towers were under construction, Washington National Cathedral held a decorative sculpture competition for children. Word of the competition was spread nationwide through National Geographic World Magazine. The third-place winner was Christopher Rader, with his drawing of that fearful villain, Darth Vader. The fierce head was sculpted by Jay Hall Carpenter, carved by Patrick J. Plunkett, and placed high upon the northwest tower of the Cathedral.