A fine example of Dutch Renaissance architecture, this grand red-brick castle embellished with stoneware decors and elegant gables was built between 1599 and 1622 by Christian IV. It was a royal residence for 100 years. An impressive barbican stands in front of it and a beautiful so-called Neptune fountain graces the courtyard. In 1878 it became a National Danish History Museum housing historical objects and a fine collection of paintings. These are shown in the King's and Princess' wings.