Sheffield is a city located in South Yorkshire, England. With a population of around 600,000 people, it is the fourth-largest city in England outside of London. Historically, Sheffield was a major industrial city, particularly in the steel industry, and was known as the "Steel City." However, in recent years, the city has diversified its economy, and now has a thriving service sector, as well as a growing creative and digital industry. Sheffield is also known for its green spaces, and is often referred to as the "Outdoor City." It is located on the edge of the Peak District National Park, and has more trees per person than any other city in Europe. Sheffield is home to several parks, including the Sheffield Botanical Gardens, Endcliffe Park, and the Winter Garden. The city is also known for its cultural attractions, including the Crucible Theatre, which hosts the annual World Snooker Championships, and the Sheffield Arena, which hosts concerts and sporting events. Sheffield is also home to several museums and galleries, including the Millennium Gallery and the Weston Park Museum. Overall, Sheffield is a vibrant and diverse city, with a rich industrial history, a strong cultural scene, and plenty of green spaces to enjoy.