Copenhagen (København in Danish) is the capital and largest city of Denmark, with an urban area with a population of 1,167,569 (2009). Copenhagen is situated on the islands of Zealand and Amager The Little Mermaid (Den lille havfrue in Danish) sits on a rock in the Copenhagen harbour at Langelinie. This small and unimposing statue is a Copenhagen icon and a major tourist attraction The Round Tower (Rundetårn in Danish) is a 17th-century tower located in central Copenhagen. One of the many architectural projects of Christian IV, it was built as an astronomical observatory Amalienborg Palace (Amalienborg slot in Danish) is the winter home of the Danish royal family, and is located in Copenhagen. It consists of four identical classicizing palace The Opera House (Operaen in Danish) is the national opera house of Denmark, and among the most modern opera houses in the world New Harbor (Nyhavn in Danish) is a colourful 17th century waterfront, canal and popular entertainment district. Stretching from Kongens Nytorv to the harbourfront just south of the Royal Playhouse The Kings Square (Kongens Nytorv in Danish) is a public square in Copenhagen, centrally located at the end of the pedestrian street Strøget. The finest and largest square of the city Tivoli Gardens (Tivoli in Danish) is a famous amusement park and pleasure garden in Copenhagen. The park opened on August 15, 1843 Rosenborg Castle (Rosenborg Slot in Danish) is a renaissance castle located in the centre of Copenhagen. The castle was originally built as a country summerhouse in 1606 by Christian IV Christiansborg Palace (Christiansborg Slot in Danish) on the islet of Slotsholmen in central Copenhagen, is the seat of the Danish parliament, the Danish Prime Minister's Office and the Danish Supreme Court Christiania (Fristaden Christiania in Danish) also known as Freetown Christiania is a self-proclaimed autonomous neighbourhood of about 850 residents, in the borough of Christianshavn in the Danish capital Copenhagen Frederik's Church (Frederiks Kirke in Danish) popularly known as The Marble Church (Marmorkirken in Danish) The church has the largest church dome in Scandinavia. The dome rests on 12 columns. The inspiration was probably St. Peter's Basilica in Rome