Roskilde, located 30 km west of Copenhagen on the Danish island of Zealand, is the main city in the eponymous municipality. With a population of 51,793, the city is a business and educational centre for the region and the 10th largest city in Denmark. It is governed by the administrative council of Roskilde Municipality.
Roskilde has a long history, dating from the pre-Christian Viking Age. Its UNESCO-listed Gothic cathedral, now housing 39 tombs of the Danish monarchs, was completed in 1275, becoming a focus of religious influence until the Reformation.
With the development of the rail network in the 19th century, Roskilde became an important hub for traffic with Copenhagen, and by the end of the century, there were tobacco factories, iron foundries and machine shops. Among the largest private sector employers today are the IT firm BEC and seed company DLF. The Risø research facility is also becoming a major employer, extending interest in sustainable energy to the clean technology sphere. The local university, founded in 1972, the historic Cathedral School, and the Danish Meat Trade College, established in 1964, are educational institutions of note.