12. Mexico City, Mexico
Mexico City is the home of Aztec and Mayan ruins and for almost nine million people. But this does not change the fact that it is highly dangerous and if you go, precaution is the mantra to survival.
11. N’Djamena, Chad
N’Djamena is the capital of Chad in central Africa. What’s interesting is that only a quarter of the population is Urban, the rest is agriculture and farming based. Carjackings and crime towards both foreign expats and tourists are high in rates there.