Introduction to the Free City of Christiana: The Free City of Christiana is a city within the city of Goha, a self-declared autonomous small area and an anarchist commune. The buildings inside are old and dilapidated, and the graffiti is unique, which is somewhat incompatible with the overall tone of Copenhagen. The city has its own "laws", so tourists need to abide by local requirements when visiting to see if taking photos, making phone calls, etc. are allowed. They also need to protect their personal property. If a robbery occurs, it may be difficult for the Copenhagen police to interfere. However, Copenhagen is increasing its governance efforts recently, so the security of Christian Free City has been relatively improved, but tourists are not recommended to visit at night.