Forte Real de São Filipe is a 16th century fortress in the city of Cidade Velha in the south of the island of Santiago, Cape Verde. It is located on a plateau above the town centre, 120 meters above sea level. The historic centre of Cidade Velha is an UNESCO World Heritage Site since June 2009. The fort was part of a system of defence for the city, which also included six smaller forts on the coast and a wall along the port.