On December 16, 1870, the specially-designed Fresnel lens of the Cape Hatteras Lighthouse was lit to mark Diamond Shoals. The lighthouse lit in 1870 is counted as the second of three at Cape Hatteras.
In 1794, Congress authorized the original 90-foot sandstone tower, completed in 1802. By the 1850s, complaints were voiced about the inadequacy of its light and, in 1861, during the Civil War, it was damaged by Union shelling.