The town of Saint Louis, set on an island at the mouth of the Senegal River, is a must-see location if you are traveling through Senegal. At the end of the 19th-century when the country was still a French colony, the governor decided that the old bridge composed of 40 floating pontoons needed to be replaced. The links of the new bridge were crafted by Gustav Eiffel and were originally designed to cross the Danube. In 1897, the bridge officially opened to the public. Composed of several iron arches, the bridge…