Christiania is a self-proclaimed autonomous neighborhood in Copenhagen, Denmark, known for its alternative lifestyle and communal living. Established in 1971, it occupies a former military barracks and has developed its own set of rules and regulations, separate from the Danish government. The area is famous for its colorful murals, artistic expressions, and a vibrant community atmosphere. The neighborhood is also known for its open cannabis trade, which has led to ongoing tensions with local authorities. Despite these challenges, Christiania remains a popular tourist destination, attracting visitors interested in its unique culture and history.