Headquartered in Louisville, Kentucky, Churchill Downs Incorporated has expanded through the development of live and historical racing entertainment venues, the growth of the TwinSpires horse racing online wagering business and the operation and development of regional casino gaming properties. Headquartered in Louisville, Kentucky, CDI has expanded through the acquisition, development, and operation of live and historical racing entertainment venues, the growth of online wagering businesses, and the acquisition, development, and operation of regional casino gaming properties.