The Fortaleza de São Miguel is Luanda's oldest surviving Portuguese structure, sitting on a promontory above the bay with commanding views across the harbour. Built from local stone in 1576, the same year the city was founded, it served for centuries as the administrative heart of Portuguese Angola. Today it houses the Museum of Armed Forces, with displays on Angola's colonial and independence history, original cannons on the ramparts, and rotating exhibitions on the MPLA's liberation struggle.
The fort is well-maintained and the museum is worth an hour of your time. The views from the ramparts — out over the bay, the Ilha peninsula, and the Marginal promenade — are the best elevated views in the city. Entry is cheap by Luanda standards. The complex sits on a hill just above the Baixa (lower city), easily reached on foot from the waterfront.