Semiahmoo Harbor Light stood on Semiahmoo Bay near Blaine, Washington, as a small offshore light station guiding vessels into the harbor from the state's far northwest corner. Built in 1905, it combined a one-and-a-half-story dwelling with a central light rising from the peaked roof, all resting on a platform supported by wooden piles. The design, by U.S. Lighthouse Board architect Carl Leick, matched that of the Desdemona Sands Lighthouse at the mouth of the Columbia River. The light served until 1944, when it was deactivated and the entire structure was demolished, but it remains part of the maritime history of Semiahmoo Bay and Blaine's waterfront.