Question: The car-parking of Grizedale Forest Visitors Centre is situated on the site of a former house pulled down in what year?
Context: Carron Crag is a small fell in Grizedale Forest in the English Lake District with a height of 314 m .  Adjacent to the trig point is a large panopticon sculpture, one of over 70 in the forest.  It is the second highest point in Grizedale Forest after Top o'Selside. The Shire Brook Valley Local Nature Reserve is located in Sheffield, England.  The Local Nature Reserve was designated in 1999 and extends over an area of approximately 100 hectares.  It is based around the former site of the Coisley Hill Sewage Works which closed in the early 1990s.  The managers office has been converted into a visitors centre.  The reserve includes Beighton Marsh, an area of reed-grass swamp, situated at its eastern end, which supports birds such as Reed Bunting, Grasshopper Warbler and Barn Owl, as well as mammals such as the Harvest Mouse and Water Vole.  The Birley Spa Bath House, a grade II listed building was restored with a Heritage Lottery Fund grant in 2001.  Also within the reserve is Wickfield Plantation, one of the few remaining areas of lowland heath and coppiced oak woodland inside Sheffield.  The Reserve contain Carr Forge Dam which is fed by the stream which comes down from Birley Spa and is a valuable location for wildlife.  New ponds were created in the same area in 1993 to mark the centenary of the City of Sheffield.  The Centenary Ponds were opened by Clive Betts on 18 June 1993.  Further ponds were created in 2016 to encourage amphibians.  Also added to the eastern side of the reserve is a landscaped former landfill site, called Linley Bank Meadow, now home to skylarks and a good place to spot soaring buzzards. Karlsladen is an old barn from 1727 that was transformed into a visitors centre for Nationalpark Mols Bjerge in 2013.  The thatched and timbered building covers 1000 square meters.  Access to the visitors centre is free, and it is open 7 days a week all year.  Before restoration the barn was a dilapidated farm building as part of the now publicly owned Kalø Estate. Grizedale Hall was a large country house at Grizedale, Hawkshead, in the Lake District in Cumbria, England.  After two earlier Grizedale Halls had preceded, it was built anew in 1905 in the style of Gothic Revival architecture.  During World War II it became No 1 Prisoner-of-war camp to hold German officers and was finally pulled down in 1957. Grizedale is a hamlet in the Lake District of North West England, in the middle of the Grizedale Forest, located north of Satterthwaite and south of Hawkshead.  It is part of the civil parish of Satterthwaite. Hamsterley Forest is a commercial forest in County Durham operated by the Forestry Commission.  It is the largest forest in County Durham and covers more than 2000 ha .  Recreational activities are promoted within the forest and are focussed at the eastern end around the visitors centre.  In addition to the visitors centre there is an adjacent cafe, an education room, toilet facilities and an independent bike shop called Wood'n'Wheels that also hires out bikes. Grizedale Forest is a 24.47 km² area of woodland in the Lake District of North West England, located to the east of Coniston Water and to the south of Hawkshead.  It is made up of a number of hills, small tarns and the settlements of Grizedale and Satterthwaite.  It is managed by the Forestry Commission and is a popular tourist destination with waymarked footpaths, mountain biking, an aerial assault course, a 16-bed hostel, and a visitor centre with a children's playground, education centre, café and shop.  The car-parking of Grizedale Forest Visitors Centre is situated on the site of the former Grizedale Hall where its remains can be still seen.  The forest is also used for two annual rallies: the Malcolm Wilson Rally and the Grizedale Stages Rally, based in Coniston. Grizedale College is a college of the University of Lancaster in Lancashire, England.  The college is named after the Grizedale Forest area of "Lancashire North of the Sands".  When it was built it was situated at the southern extremity of the Bailrigg campus.  The development of the south west campus has meant that college is now considered to be one of the more centrally located colleges.  It is currently the fifth largest in terms of number of students. Esthwaite Water is one of the smaller and lesser known lakes in the Lake District national park in northern England.  It is situated between the much larger lakes of Windermere and Coniston Water, in the traditional county of Lancashire; since 1974 in the administrative county of Cumbria.  To the north is the village of Hawkshead and to the west is Grizedale Forest. Top o'Selside is a hill in the Lake District in Cumbria, England.  At 335 m , it is the highest point of the group of hills situated between Coniston Water and Windermere.  This group also includes the Wainwright of Black Fell and the summits of Black Brows and Rusland Heights.  Top o'Selside lies not in the centre of this region, but in the south-western corner, just outside the forestry plantations of Grizedale Forest and only two-thirds of a mile from the eastern shore of Coniston Water.  This large separation from any higher ground gives it enough relative height to make it a Marilyn.
Answer: 1957