Copenhagen, the capital of Denmark, is consistently ranked among the happiest and most bicycle-friendly cities in the world. More than 60% of residents commute to work or school by bike. The city is home to the world's oldest monarchy and the 'Dannebrog,' the Danish flag, which is recognized by Guinness World Records as the oldest continuously used national flag. Copenhagen's landmarks include the colorful 17th-century waterfront of Nyhavn and the Little Mermaid statue, inspired by Hans Christian Andersen's fairy tale. The city also features 'Freetown Christiania,' a unique, self-governed 'intentional community' established in an abandoned military barracks in 1971. Denmark is a leader in green energy, and Copenhagen aims to become the world's first carbon-neutral capital. The city is connected to Malmö, Sweden, via the massive Øresund Bridge, which combines a four-lane road and a double-track railway, serving as a vital link between Scandinavia and mainland Europe.