Walnut Creek is the business hub of Contra Costa County. Located on the western edge of Mount Diablo, from which one can view the smoldering plume of yellow smoke that emanates from the Central Valley and the smoldering plume of orange smoke that emanates from Oakland/SF. Walnut Creek is also the traffic hub of Contra Costa County, with the intersection of Highway 24 and I-680. Although many urban visitors to Walnut Creek may be surprised how few minorities appear on its streets, compared to other towns in the area (such as Danville (California)|Danville or Alamo (California)|Alamo) Walnut Creek is practically a bastion of mutliculturalism and tolerance. http://wikitravel.org/en/Walnut Creek