The cspan cities tour is exploring american stories as we take book tv and American History tv on the road. We travel to san antonio, texas. Coming up in the next hour we will experience the history of this south, texas city. Starting with a visit to the San Antonio Missions National Historical park. Following that in about 20 minutes we will hear about the role the city played in early military aviation. And in about 40 minutes visit one of the citys most recognizable features and biggest attractions, the historic river walk. Later a trip to the Spanish Governors Palace, one of the oldest buildings in the city dating back to the founding. We begin our special feature at Mission San Jose, one of four remaining colonial Spanish Missions in san antonio. Welcome to our Spanish Governors Palace. What youre looking at is actually the last visual remnants of the presidio, the original facility was built in the 1720s and it was really the residence for the captain. What we are looking at toda