This case required the Commonwealth Court to examine a prior nonconforming use at a recreational park open to the community. Hunterstown Ruritan Club (the “Club”) sought to expand its go-carting operations to include racing on Sundays. While the Straban Township Zoning Hearing Board (the “Board”) prevented the Club from doing after deeming it impermissible because it was not a use reflected in the Club’s certificate of nonconformance, the Commonwealth Court reversed and remanded, holding that the Club’s previous racing events on Sundays entitled it to protection.