Premier-Kennett Square was opened with much the same philosophy as the 422 corridor sites (Douglassville, Limerick and Oaks); Kennett Square, located below Exton in Southern Chester County, provides another access point to alleviate the burden of patient volume at that original Chester County location. Rated one of "America's Coolest Small Towns" by Budget Travel (see below link) and BudgetTravel.com, Kennett Square is the mushroom capital of the United States and is one of the main draws in what is Pennsylvania's most affluent county (#24 Richest County in The United States). Premier-Kennett Square was built with the same basic philosophy as the Douglassville site, but it was also built with the experience gleaned during the building and launch of the four sites in between.