Originally built as a country house in 1606, it was expanded several times to its current condition in 1624. The Danish regents used it as a royal residence until 1710.
I haven't seen too many castles, but as far as castles go, this one seemed to be on the smaller side. Or at least, that's how it felt to me. However, it is surrounded by a beautiful garden which is more of a park and a nice reprieve from the mad bikers of Copenhagen.
Historic Danish castle in the heart of Copenhagen.