When in Copenhagen, do as the locals do and explore the city by bike, undoubtedly the best way to explore the city's many hidden corners. The bike-friendly streets mean cycling to the city's major sites are a breeze. Venture into the Freetown of Christiania with a local guide, a self-proclaimed autonomous neighborhood south-east of the city centre. It is regulated by a special law, the Christiania Law of 1989, and has been a source of controversy since 1971 when squatters took over a former military area. The afternoon is free for you to further explore this Scandinavian city. Stroll along the harbour or head out to the classicist palaces of 18th century Amalienborg, to this day the main residence of the Danish Royal family. Perhaps pay a visit to Frederik's Church, also known as Marble Church, the Court House on Nytorv Square or check out the facade of the red brick town hall. Alternatively, the National Museum is not to be missed, nor is the Christiansborg Palace in the very centre of Copenhagen.