The lighthouse was on the north side of the Great Dune on Cape Henlopen, Delaware.

[2] Cape Henlopen Lighthouse was constructed on the north side of the Great Dune to obtain additional height.

In 1897, the sand dune surrounding the tower was reported to be steadily blowing away at a rate of 3 to 5 feet (0.91 to 1.52 m) per year.

In 1905, several tons of brush were placed about the tower and oil house to prevent the foundations and brick walls from being undermined by the drifting away of the sand.

[5][6] A second replica of the lighthouse was built and placed on a small hill overlooking the 5 points intersection on Route 1.