The Magazine Fort in the south east of the Park is the location where Phoenix Lodge was built by Sir Edward Fisher in 1611. In 1734 the house was knocked down when the Lord Lieutenant of Ireland, Lionel Sackville, 1st Duke of Dorset wanted a powder magazine ("a building to store gunpowder") for Dublin. An extra wing was added to the fort in 1801 for troops. The Christmas Raid of 1939 happened here.