Forte de Sao Filipe is a historical fortification located in the city of Setubal, Portugal. It was built in the late 16th century by King Philip II of Portugal to defend the city and the river Sado from pirate attacks.

The fort is strategically located on a hill overlooking the city and the river, providing an excellent view of the surroundings. It has a pentagonal shape, with five bastions that are connected by walls and a moat. The fort also has a chapel, a powder magazine, and several other rooms for storage and accommodation.

Over the centuries, Forte de Sao Filipe has been used for various purposes, including military defense, political imprisonment, and even as a hotel. In the early 20th century, the fort was restored and opened to the public as a historic monument. Today, visitors can explore the fort and its various rooms, including the chapel, the guard room, the watchtower, and the gunpowder magazine. The fort also has a small museum displaying historical artifacts related to the fort and the city's history. The fort is a popular tourist attraction in Setubal and offers beautiful views of the city, the Sado estuary, and the Arrabida Natural Park.