Mona Island Light

Mona Island Light, also known as Faro de la Isla de la Mona, is a historic lighthouse located on the island of Mona, Puerto Rico, in the Mona Passage between Puerto Rico and the Dominican Republic. It is the only lighthouse built of iron and steel in Puerto Rico. While some sources reported that the structure was designed by Gustav Eiffel, who also designed the Eiffel Tower in Paris, recent studies have shown that the tower was designed around 1885 by Spanish engineer Rafael Ravena.

It is the first of two lighthouses built by the U.S. government in Puerto Rico.

Source: Wikipedia