This book develops and establishes knowledge about borderology in the border zone between different countries, cultures, and climatic environment. The content of border and border zone has, during our research, changed from being a physical border between states to different borders and border zones which also include social and mental borders. The COVID-19 pandemic has challenged the concept even more. The expressions “lockdown” and "social distance" indicate such borders that we, a short time ago, had largely not considered in our everyday life. Not only states closed their borders, regions inside a country, and even borders within families were established. “Illegally” passing these borders could crate strong reactions both from the nature by a disease or by the authorities with fees. The pandemic has not only challenged our understanding of borders and border zones, but it has also challenged our understanding of human rights and especially our understanding of what freedom is.