4. Sanaa, Yemen
Sanaa, Yemen is the most dangerous city in the world. The city is a high risk of being a target for terrorist activity, bombings, attacks, and kidnapping. There are not a good political situation in previous years, so the city comes in the list of the most dangerous and unsafe cities in the world. The old city of Sanaa is known for various terrorist activities. The old city of Sanaa is a front of World Heritage sites where bombs were damaged in 2015.
Sanaa, Yemen has terrorist activities, bombings, attacks, kidnappings, and other violent crimes, so travelers are not advised to this city. According to the source, this city is totally unsafe for foreigners to travel to in 2023.