A standard cache hidden by the tennis courts.
History of Southsea common: Southsea began to develop from the 1810s as a residential suburb of Portsmouth and a seaside resort. Southsea Common was levelled in 1831?43 and gradually laid out as a pleasure ground, with Clarence Esplanade constructed in 1848. Housing development to the north and east of the Common continued in the 1840s and 1850s under Thomas Ellis Owen, a local speculator. Avenues of holm oaks had been planted around some of the roads by 1870 and after the Council took a lease of the Common in 1884, a walk known as the Ladies' Mile (1884) was laid out for parades, the Canoe Lake (1886) was formed, and various avenues were planted in the late C19 and early C20. The housing development to the north was largely complete by 1900 but the Common was further planted and developed with gardens after 1922, when it was purchased from the War Office by Portsmouth City Council for use as a public park. Further sports and recreational facilities were added between the wars and during the second half of the C20. Southsea Castle remained in military use until c 1960 when it was purchased by Portsmouth City Council. The later additions were demolished and the C16 part of the Castle was restored and opened as a museum. The Common remains (2002) in municipal ownership.