By Don Morfe, April 21, 2012
	1. The Main Plaza Marker

On the plaza floor in front of you troops drilled, stood inspections, and assembled for formal events. The large, vaulted rooms that surround the plaza, called casemates, housed a kitchen, chapel, storage areas, officers’ quarters, and barracks for enlisted men. Some outer casemates were used for firing cannon. The center of the plaza contains a wellhead, to which soldiers came to draw water from three large cisterns beneath the plaza. During the late 1700’s and most of the 1800s, this plaza was a very busy place.
 
Location. 18° 28.259′ N, 66° 7.444′ W. Marker is in San Juan, Puerto Rico, in San Juan County. Marker is on Cll Del Morro. Click for map. Marker is in this post office area: San Juan PR 00926, United States of America.
 
Other nearby markers. At least 8 other markers are within walking distance of this marker. A Defense of the 1st Order (about 300 feet away, in a direct line); Defending San Juan (approx. 0.3 miles away); Imagine Life Here (approx. 0.9 miles away); a different marker also named Defending San Juan (approx. 0.9 miles away); A Never Ending Challenge (approx. 0.9 miles away); The Heart of San Cristobal (approx. 0.9 miles away); Three Flags (approx. 0.9 miles away); Firepower (approx. 0.9 miles away). Click for a list of all markers in San Juan.