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 own music festival, Tramlines. This event, entry to which is free, was first organised in 2009 and takes place at several venues across Sheffield, notably in the city centre. Sheffield City Centre plays host to a number of themed markets throughout the year with most taking place on Fargate, in the Peace Gardens or at Barkers Pool. Themes include Continental (European Foods, crafts etc.), German (Christmas market) Italian, Tunisian and occasionally global themed markets take place. There are also farmers and crafts markets taking place throughout the year. Sheffield station lies on the edge of the city centre and is