Visitors Bureaus Since 2008 Chester County Conference and Visitors Bureau 17 Wilmont Mews, West Chester, PA 19382 610-719-1730 http://www.brandywinevalley.com The Chester County Conference and Visitors Bureau is a not-for-profit, independent agency that serves as the official Tourism Promotion Agency (TPA) for Chester County, working on behalf of its membership. The Visitors Bureau was created in 1963, and is responsible for marketing Chester County and the Brandywine Valley to individual leisure travelers, motor coach and group tour operators, meeting planners and travel writers.