Fortaleza de Sao Sebastiao (Fort of Saint Sebastian) built in the early 16th century in the city of Sao Tomé. It was built to protect the city. It was later to be the refuge of the Portuguese after a slave rebellion lead by Amador - the popular folk hero - in the middle of the 16th century. Sao Tomé and Principé is Africa's second smallest country with a population of 193 000. It consists of two mountainous islands in the Gulf of New Guinea, straddling the equator, west of Gabon.