This should be called the Alamo and Riverwalk, since you can't take pics inside the Alamo.   All that remains of the Alamo is the tiny chapel and the long barracks.   The Alamo chapel is about the size of the chapel at Presidio La Bahia at Goliad.   The Alamo was the northern most mission of the five at San Antonio.   The Alamo is owned by the State of Texas and operated by a separate group called the Daughters of The Republic of Texas, the other four are run by the US Department of the Interior.   Not impressive in appearance, it's importance is in it's symbolism of the struggle by Texans to free themselves from Mexican rule in 1836, right after Santa Anna centralized the Mexican government in order to become a dictator.  

Links:
Battles of the Texas Revolution
Timeline of the Texas Revolution
The Runaway Scrape

From ground level, Betty in front of the chapel, the building on the left is the long barracks.

Across the street from, and directly in front of the Alamo, is a remnant of the outer wall of the mission, discovered while excavating for the walk to the river walk.

Gardens surround the Alamo on three sides, all tree shaded and beautiful.

Looking southwest from the southeast corner of the chapel, the shaded arbor to the right is the where you wait in-line for entering the chapel.

Missy interrupted Betty's inspection of a spanish cannon on the north Alamo garden.