In the framework of the Extrabudgetary project “Capacity building, implementation actions and increase ratification schemes for the 2001 Convention for the Protection of the Underwater Cultural Heritage in Latin America and the Caribbean” financed by the Spanish government, the Regional Office for Culture for Latin America and the Caribbean of UNESCO is organization a photographic exhibit of large size photographs depicting emblematic sites of the underwater cultural heritage of the world.These large-size, high resolution photographs will cover the fences of the Castillo de la Real Fuerza, located in one of the most visited plazas of the city and bordering the Avenida del Puerto, popular for strollers and tourists. The exhibit consists of 30 photos and explanatory panels on the UNESCO 2001 Convention for the Protection of the Underwater Cultural Heritage emphasizing on the underwater cultural heritage of the Caribbean and Latin America. The museum housed in this emblematic fortified castle of the colonial period, is dedicated to the study of navigation, underwater archaeology and maritime history. The outside fences of the castle have served in the past for exhibits that have been met with great success. This photo exhibition on selected underwater cultural heritage sites illustrates the beauty of the traces of human existence covered by water. From ancient shipwrecks to underwater caves, the exhibition is an insight to the diversity of the underwater cultural heritage and its astonishing condition of conservation through the centuries of time, or even millennia.