An official Path Through History Site! With its 27-mile range, Dunkirk Lighthouse is one of the most prominent beacons on Lake Erie. Also known as known as Point Gratiot Light, this active lighthouse was established in 1826; the current tower was first lit in 1875. The lighthouse, automated in 1960, still uses the original third order Fresnel lens installed in 1857. At the Museum, visitors can explore the historic lighthouse, admire the magnificent view of Lake Erie from the observation deck and stroll through the park grounds.