Gray Line of Austin and San Antonio are truly your local experts. We offer a wide selection of daily scheduled tours and private tours. Visit the Texas Hill Country on our Hill Country Tours or visit wineries in the picturesque Hill County on our Texas Hill Country Wine Tours. We offer City tours in Austin and San Antonio such as, our Fortresses of Spain tour that showcases three 1700’s Spanish Missions in the San Antonio Missions National Historical Park and the acequias that served the Missions.