Rosenborg Castle Gardens is the oldest and most visited park in central Copenhagen, Denmark. Established in the early 17th century as the private gardens of King Christian IV’s Rosenborg Castle, the park also contains several other historical buildings, including Rosenborg Barracks, home to the Royal Guards, as well as a high number of statues and monuments. The park also plays host to temporary art exhibitions and other events such as concerts throughout the summer.

More details: https://en.wikipedia.org/wiki/Rosenborg_Castle_Gardens