The city of Mission Viejo is mainly residential , although there are a number of offices and businesses within its city limit.  It is considered to be one of the largest master-planned communities ever built under a single project in the United States. It was named  the safest city in the United States in a 2007  Morgan Quitno crime statistic survey.  In 2009, it was named the safest city in California and the third safest in the nation, according to the CQ Press.  The city has numerous recreational areas such as the newly remodeled Norman P. Murry Community and Senior Center and there are about two parks per square mile.  Mission Viejo has three golf courses, The Mission Viejo Country Club, Casta del Sol Golf Course, and the Arroyo Trabuco Golf Club.  At the center of the city is a man-made lake, Lake Mission Viejo, a private association for Mission Viejo residents with custom waterfront homes, condominiums, boat rentals and beaches.