San Antonio is a beautiful city. The Alamo is a must see but there are other missions that are less crowded. Every time that I have been to the Alamo it is packed but if you follow the mission trail signs, or get a map from the visitor center across from the Alamo, you can see the other historic missions. They don't have the historical importance of the Alamo but they are more beautiful and less crowded. Mission Concepcion is the most beautiful and the first one along the trail after you leave the Alamo. I'm not sure about admission price, it was closed when I was there. San Antonio is a beautiful city with a lot of historical architecture that is worth seeing.