The most substantial of Ibo's three Portuguese forts, Fort São João sits at the northern tip of the island and commands sweeping views over the Quirimbas channels. The star-shaped walls are largely intact and you can walk the ramparts. Local guides can be hired at the gate and are worth the fee — the stories they tell fill the ruins with life.
Fort São João
Star-shaped Portuguese fort with sweeping channel views
A story
Fort São João was completed in 1791, making it one of the largest Portuguese fortifications on the East African coast. During the 19th century it served as a prison — shackles and cells are still visible — and later as a customs post. At its height, Ibo was one of the busiest slave-trading ports on the coast; the fort's dungeons held captives before their shipment across the Indian Ocean.