Mary Island Light

Mary Island Light is a lighthouse in Ketchikan Gateway County, Alaska. Alaska has 20 lighthouses on record at Wayfarrow, 3 of them in Ketchikan Gateway County.

It was built in 1937, in the interwar years, making it the 11th oldest of the 11 in Alaska with a recorded construction date; the tower stands about 61 feet tall (3rd tallest of 9 measured in Alaska); the light characteristic is recorded as Fl W 6s.<br> obscuR from 341° to 150° (a white flash every 6 seconds).

Status check, 2026-11: The record's 1903 date is when the station was set up; the original wooden lighthouse was replaced by the current Art Deco reinforced-concrete tower, built 1936–38 and first lit 1937, and the tower is the only station building left. Mary Island Light is listed on the National Register of Historic Places. It stands at 55.0989° N, 131.1817° W.

Key facts

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