The Gibraltar Point Lighthouse is a lighthouse located on Hanlan's Point, the most westerly of the Toronto Islands in Toronto, Ontario, Canada. Begun in 1808, it is the oldest existing lighthouse on the Great Lakes, and one of Toronto's oldest buildings. The lighthouse is perhaps best known for the demise of its first keeper, German-born John Paul Radelmüller, whose 1815 murder forms the basis of Toronto's most enduring ghost story.