Geography of Sheffield (Totley Brook passes south of Totley and meets Old Hay Brook at Needham's Dyke). The Sheaf flows northwards to join the River Don near Blonk Street Bridge in the city centre. This lower section of the River Sheaf together with the River Don, between the present Blonk Street and Lady's Bridge, formed part of the perimeter of Sheffield Castle. Porter Brook's source is just inside the Peak District National Park, to the west of the city, at Clough Hollow, also near Ringinglow. From here it flows eastward to meet the Sheaf, at a point now located underneath Sheffield Midland Station.
Sheffield City Centre the Town Hall and Arundel Gate, one of the major roads running through the city centre. Sheffield’s largest building, St Pauls Tower, is situated on the edge of St Paul’s place, close to both the Town Hall and Sheffield Station. At the opposite end of Fargate to the Town Hall is the Cathedral Quarter. Here there are numerous law firms and employment agencies, as well as numerous shops and the city centre hub for the Sheffield Supertram. The city centre's main cinema, Odeon Sheffield, is located on Arundel Gate. Also within the central zone is The Moor. Once Sheffield's primary