Greater Sudbury, which includes communities such as Sudbury, Capreol, Nickel Centre, Onaping Falls, Balfour, Valley East and Walden, is the largest city in Northeastern Ontario with a population of approximately 165,000 people. Located 390 km (242 mi) north of Toronto, Sudbury is serviced by major highways, including the Trans Canada Highway, and acts as a gateway to more remote parts of Northern Ontario. At one time, Sudbury had a reputation for being incredibly polluted due to the city's largest industry—mining. However, over the past couple of decades, Sudbury has undergone a furious and costly clean-up project, which has seen almost eight million trees reintroduced into the city's landscape and international attention for its concerted environmental efforts. With over 250 lakes and a ski hill within its boundaries, the City of Greater Sudbury has plenty of recreational opportunities. Soak up the summer sun and have some fun at the annual Summerfest in August.