Sheffield has city status in the United Kingdom and is a metropolitan borough of South Yorkshire, England. Its name derives from the River Sheaf, which runs through the city. Historic counties of England a part of the West Riding of Yorkshire, and partly Derbyshire, the city has grown from its largely industrial roots to encompass a wider economic base.
During the 19th century, Sheffield gained an international reputation for steel production. Many innovations were developed locally, including crucible steel and stainless steel, fuelling an almost tenfold increase in the population during the Industrial Revolution. Sheffield received its municipal charter in 1893, officially becoming the ''City of Sheffield''. International competition in iron and steel caused a decline in traditional local industries during the 1970s and 1980s, coinciding with the collapse of coal mining in the area.
The 21st century has seen extensive Urban renewal in Sheffield along with other British cities. Sheffield's gross value added (GVA) has increased by 60% since 1997, standing at £9.2 billion in 2007. The economy has experienced steady growth averaging around 5% annually, greater than that of the broader region of Yorkshire and the Humber.The City of Sheffield is built on seven hills and is near the confluence of five rivers. It is estimated that Sheffield has over two million trees, more per person than any other city in Europe; 61% of the city is green space.