25 of the most dangerous cities in America Brussels, Belgium is one of the most dangerous cities in all of Europe. THE MOST dangerous countries in Europe have been revealed with political tensions, anti-tourism protests and lack of UK consular support cited. Brussels, Belgium – 2.8 homicides per 100k. Marseille, France: 64.35: 35.65: Naples, Italy: 58.30: 41.70: Catania, Italy: 58.13: 41.87: Turin, … 20. Is … Here are the 20 most dangerous cities in Europe for 2019 ranked in accordance with their homicide and other types of crime rates, as well as a few which have other extreme danger factors. 24/7 Wall St. reviewed violent crime rates in major U.S. cities from the FBI’s 2017 Uniform Crime Report. See which cities made the top 25 list.