Oswego Harbor West Pierhead Lighthouse is an active aid to navigation located off the coast of Oswego, New York. It was built in 1934 to replace an earlier light constructed in 1880. It stands at the end of a 2,000-foot-long breakwater at mouth of Oswego River, extending one-half mile out onto Lake Ontario. The H. Lee White Maritime Museum offers tours to the Oswego West Pierhead Lighthouse between mid-June and September of each year.