There are two lighthouses on Green Island. The 12 meters high old Green Island Lighthouse started to operate on 1st July 1875, about two months after Cape D’Aguilar Lighthouse. Constructed of local granite, this smaller tower cost about one-sixth of the Cape D’Aguilar Lighthouse tower.

When the Cape D’Aguilar light became obsolete, after the construction of Waglan Lighthouse in 1893, a larger tower was constructed to accommodate the Cape D’Aguilar light at Green Island. The light was then moved and the new arrangement came into operation in 1906. The ‘new’ round granite tower shown here is 17.6 meters high, it has a spiral staircase and the steel lantern on top of the tower is painted white.