 Landmarks in the colonial city center include Albuquerque Square (named after the colonial governor of the mid 19th century, Caetano Alexandre de Almeida e Albuquerque), the old city hall built in the 1920s, the Presidential Palace, which was constructed in the end of the 19th century to house the Portuguese governor and the "Monumento de Diogo Gomes", named after the Portuguese navigator who discovered the island of Santiago in 1460.Among the places of worship, they are predominantly Christian churches and temples