The stadium is the centrepiece of an area known as Sportcity. It also includes several other sporting venues. Next to the stadium is the "Manchester Regional Arena". The Arena served as a warm-up track during the Commonwealth Games. It is now a 6,178 capacity venue that hosts national athletics trials and Manchester City reserve team games. The Manchester Velodrome and the National Squash Centre are close to the stadium. In September 2006, Manchester City received planning permission to build an wind turbine at the stadium. Designed by Norman Foster, the turbine was meant to give power for the stadium and nearby homes. Safety concerns about ice on the blades led to the proposal being stopped. From 2005 to 2009 a Thomas Heatherwick sculpture, "B of the Bang", was present in front of the stadium. Built to honor the success of the 2002 Commonwealth Games, it was the tallest sculpture in the UK. However, structural problems led to the sculpture being taken apart in 2009.