Makapuʻu Point Lighthouse is a 46-foot-tall (14 m), active United States Coast Guard lighthouse established in 1909. Construction for the lighthouse was prompted by the grounding of the steamer Manchuria in the predawn hours on August 20, 1906 on the reefs off Waimānalo.
From the Makapu’u Light on Oahu’s southeasternmost point, the world’s largest lighthouse lens reflects a beam that can be seen from 19 nautical miles away.
The 12-foot-tall and 8-foot-wide Hyper-radiant Fresnel lens takes up more than a quarter of the space inside the 46-foot-tall lighthouse.
With more than a thousand prisms, the lens is almost five feet taller than the First Order Fresnel lens in America’s tallest lighthouse, the 207-foot-tall Cape Hatteras Light in the North Carolina Outer Banks. It is wide enough for several people to stand inside.
According to en.wikipedia.org; dvidshub.net. Source of photos: internet
