This is an inner wall at San Cristobal that overlooks an outer wall. Thus, if an attacking army managed to breach the outer wall, they would still find themselves facing these ramparts, which in its heyday would have been bristling with cannons.
The fortress of El Morro at the tip of Old San Juan, as seen from San Cristobal. Unfortunately, we did not have time to visit El Morro. After we were done at San Cristobal around 1:00 p.m., we ate lunch at some restaurant on Calle Fortaleza. The next thing we knew, it was nearly 2:30, and we needed to get back to Plaza Colon before 3:00 p.m. for the van ride back to the El Conquistador. El Morro and the rest of Old San Juan will have to wait for another visit to Puerto Rico.
San Cristobal as seen from Plaza Colon.