Visit the ruins of the city of Kua, In the south of Juani Island, which is part of the Mafia Archipelago, the last ruins of the old city of Kua were hidden in the thick forests. The ruins are from the 1200s, but it’s not clear why the city stopped being built. Feel both scary and beautiful in these ruins, where birds are chirping in the fading afternoon light and vervet monkeys run through the crumbling ruins while strangler fig roots cover them.