Part of the land on which the Parks is located had been used for recreation for a long time, and it formed part of the University Walks said to have been used by Charles II to walk his dog in 1685. The land originally belonged to Merton College, and in 1853/1854, the University of Oxford purchased from Merton College to build the parks. Over an eleven-year period a total of of land was eventually acquired. A portion of this land (4 acres) was set aside for the University Museum which was built between 1855 and 1860. Between 1912 and early 1950s, a further portion was used to build the Science Area, so the current site measures around .