Tanjung Datu Lighthouse (on the Indonesian border)

The Tanjung Datu Lighthouse is located on the northwestern corner of Borneo, marking the border between Indonesia and Malaysia. The border stretches from this point through the highlands of the Borneo hinterland to the Gulf of Sebatik and the Celebes Sea in the eastern side of the island. The lighthouse is situated in a strategic location, separating the Indonesian provinces of North Kalimantan, East Kalimantan, and West Kalimantan from the Malaysian states of Sabah and Sarawak.

The border was established in 1824 through the Treaty of London, also known as the Anglo-Dutch Treaty of 1824. Over the years, the border has undergone several changes and disputes, with the most recent development being the settlement of part of the dispute by the International Court of Justice in the Ligitan and Sipadan Case in 2002. The lighthouse is likely to have been built after the establishment of the border, although the exact year of construction is not available.

The Tanjung Datu Lighthouse is an important landmark on the Indonesian-Malaysian border, serving as a guide for navigation and marking the territorial division between the two countries. While there is limited information available about the lighthouse itself, its location on the border highlights the complex history and geography of the region. The border remains relatively porous, with several land and sea transport crossings between Indonesia and Malaysia, and continues to be an important issue in the relations between the two countries.