Hagaparken ("Haga Park"), or simply Haga in Solna Municipality just north of Stockholm, Sweden, is a vast and popular nature area, with large parks, woods and gardens.
Hagaparken is located along the western shoreline of Brunnsviken and is a part of the Royal National City Park. Within the park are Haga Palace, King Gustav III's Pavilion, the Chinese Pavilion, the Haga Echo Temple, the Turkish Kiosk, an older castle ruin (which is not really a ruin as it is the remains of a castle never finished) and several other interesting buildings on the grounds (such as the peculiar Copper Tents and also the Butterfly House). Included in the Haga Park is also the Royal Burial Ground of the Swedish Royal family (since 1922), where several members and ancestors of the present Swedish royal Bernadotte family rest.
The master plan for development was originally designed by architect Fredrik Magnus Piper (1746–1824). Hagaparken has historically been favoured by Swedish royalty, especially Gustav III who founded it and developed it 1780-1797, and by the famous troubadour Carl Michael Bellman, a contemporary of Gustav III, who is much associated with Haga due to the lyrics of his compositions, poems and his writings. The song Fjäriln vingad syns på Haga, one of Bellman's Fredman's Songs, is entirely dedicated to the park.
In 1935, Hagaparken became a state building monument and has been part of Sweden's first national city park since 1994. Today it is managed by the State Property Agency (Statens fastighetsverk) and the Royal Djurgården Administration (Kungliga Djurgårdens Förvaltning).