Gray Line Tours depart from local hotels and attractions. Familiarize yourself with San Antonio on a bus tour of the city. Gray Line offers sightseeing excursions along the city's historic Mission Trail as well as to the King William Historic District, The Alamo, La Villita and the River Walk. Choose from a half- or full-day Grand Historic City Tour or a hop-on, hop-off tour on a double-decker bus. Other tours are available.