One of the last two lighthouses built in America, the Oak Island Lighthouse was built by the U. S. Coast Guard in 1958, and marks the entrance to the Cape Fear River. With a tower height of 169 feet, the signal can be seen 24 nautical miles. Its signal charecteristic is 1 flash each second for 4 seconds and 6 seconds off. Its main light, comprised of four rotating, 24-inch parabolic mirrors and 1000 watt, 120 V AC quartz bulbs, make it the strongest in the country.
The tower is built of reinforced concrete with the paint mixed into the concrete to eliminate the need for painting.