Why were so many members of the European royal family assassinated in Geneva, such as the Queen of Spain and Queen Sissi of Hungary?

First of all, Geneva is a very popular tourist city with beautiful scenery. Of course, these tourists also include many European royal members. If they go, there is a possibility that they will be killed. Of course, they will not It’s all about tourism, and Geneva is an international city with the headquarters of many international organizations. Secondly, as a Swiss city, Geneva generally had poor security in those days. So in summary, 1. There are a lot of royal family members to go, 2. The defense is poor. As a result, more people died.