was reputed to have magical properties. John Douglas designed a canopy to stand over the site of the well. The canopy is listed at Grade II. Money was raised by public subscription to erect a statue to the 2nd Marquess in 1859. The statue is in white marble and was made by Thomas Thornycroft. The statue was originally surrounded by four guns, two being Boer guns which were captured in the Boer War and the other two were Russian guns which had been captured at Sebastopol in the Crimean War. The guns are no longer present. The statue is listed at Grade II. In the park are three medieval arches moved from elsewhere in the city, both of which are listed at Grade II. St Mary's Arch with its wing walls dates from around the 13th century and formerly stood in St Mary's Benedictine Nunnery. The Old Shipgate Arch formerly stood to the west of the Bridgegate and was taken down in 1831. The third archway was removed from St Michael's Church. Also in the park and listed at Grade II is Jacob's Well Drinking Fountain consisting of a small stone arch with a drinking fountain for people and a dish for their pets, which is now dry. During the laying out of the park a long line of Roman earthenware water pipes was discovered close to the lodge which used to bring fresh water from Boughton to the Roman fortress. In the 1950s a rockery was constructed on the southern edge of the park with waterfalls, streams and fountains. The main gates of the park, together with other gate piers and sections of the park walls, all designed by John Douglas, are listed at Grade II. Activities A number of cultural and horticultural events, including events in the Summer Music Festival, are held in the park. Also in the park is the Grosvenor Park Miniature Railway which was built in 1996 to commemorate the centenary of the Duke of Westminster's railway at Eaton Hall. It has a gauge of and a circuit of . Grosvenor Park Open Air Theatre During the summer months (July–August) the park hosts the Grosvenor Park Open Air Theatre, a purpose-built outdoor theatre that has been described as a 'Northern alternative to The Globe and Regent's Park'. The theatre, operated by local arts producer Storyhouse (formerly Chester Performs), is the only full-time professional theatre company