The park's central location and its outdoor cafés makes it one of the most popular hangouts and meeting places in Stockholm. It also hosts open-air concerts and events in summer, while offering an ice rink[1] during winters. Additionally, First of May demonstrations held by the Left Party and other communist and left-wing parties usually take place here each year. There is also a number of cafés, art galleries and restaurants; for example Galleri Doktor Glas, a name taken from the novel Doctor Glas by Hjalmar Söderberg published in 1905.

Though the royal kitchen garden is known to date back to the Middle Ages, it is first mentioned in historical records as konungens kålgård ("king's cabbage garden") in 1430. (See also Trädgårdsgatan.) The royal property in the area was considerably enlarged through an acquisition in 1454 and further expanded throughout the following century. This utilitarian garden was gradually transformed into an enclosed royal Baroque pleasure garden and accordingly referred to as "King's Garden" throughout the 17th and 18th centuries. The garden was a symmetrical composition centred on a fountain and separated from the waterfront by the Makalös Palace ("Peerless").

Find more at - http://en.wikipedia.org/wiki/Kungstr%C3%A4dg%C3%A5rden