What prominent Washington, D.C., building has a gargoyle of Darth Vader peering down at passersby? Washington National Cathedral, on its northwest tower. The futuristic sculpture was based on a drawing that placed third in a contest held in the 1980s by the Cathedral and National Geographic World magazine (now National Geographic Kids). Other winning entries are also represented on the tower. Congratulations to Cheko Aguilar for being the first - and only - to get the correct answer!