In 1907 the site known as Bellevue, was purchased by the Borough Council for £4346 1s 7d (‘s’ standing for shillings and ‘d’ for pennies). In 1908 the council named the park 'The Parciau' and a competition was held in 1909 for the best design. Development began in 1910 with the entrance gates, park railings and Lodge being provided by public subscriptions.
The first tenant of the Lodge became the park’s Superintendent on 17th February 1914. Two bowling greens were constructed, one to be a “crown” green and the other a “flat” green and were opened to the public on May 30, 1914. The construction of the bandstand also dates to 1914 and was opened on the afternoon of August 19 by the mayor. It was often used for Sunday brass band concerts.
In 1916 a cannon dating from the Crimean War bearing the inscription: “Captured Sevastopol 1855”, was relocated from Guildhall Square to the park.
The residents of Wrexham made an enormous contribution to the war effort between 1914 and 1918 in raising £6 million in War Loans. In recognition of this a "Landship" tank Mark 1 was given to the Local War Savings Committee and this was proudly displayed in the park.
The tank was sold for scrap in 1928 to make way for a statue of Queen Victoria which was moved from the Guildhall Square in 1928 to its present location. The statue was donated by the sculptor Henry Price in 1905 to mark the coronation of King Edward VII.
The Second World War was a bleak period for the park. Between 1940 and 1942 the council sold off non-essential iron for scrap, including the Crimean War cannon and park boundary railings to help the war effort. The Parciau played its part in the “Dig for Victory” campaign between 1941 and 1944 when the land was used to grow vegetables. The eastern part of the park was ploughed up and used to grow potatoes, planted by children from local schools.
By the late 1960s disuse and disrepair lead to calls for demolition of the bandstand. However, a restoration project in 1973 saved this important feature. The pavilion was also converted in the 1970s to provide a community centre.
The park was extensively revitalised and refurbished in 1999 to its original Edwardian splendour. This was made possible with help from the Heritage Lottery, Urban Parks Project, Welsh Development Agency and European Regional Development Fund. A grand opening to mark the occasion was held in June 2000.