10. Abidjan
Ranked the world's 10th least livable city, Abidjan in Côte d’Ivoire is the best of the worst. The main threats come from civil unrest and crime. Car- and bus-jackings are common and it's safer to avoid confrontations with police and security forces.
A five-bedroom duplex with a swimming pool (picutred) costs $490,000. It is more than 1,200 square metres and comes with two living rooms and a large garden.