I’m on my first visit to San Juan, Puerto Rico. Today we visited Castillo San Felipe del Morro (El Morro), a fort originally built by the Spanish to guard the entrance to San Juan Bay. The original foundation was laid in 1539, and it was modified and enlarged over 250 years. The United States then added to it during World War II. Finding out that a fort this old was modified and used during WWII surprised me. I was born long after WWII, so I forget that our military has advanced a great deal in terms of technology used since then. The fort is impressive. It has six different levels and is incredibly well built. I am impressed with those people who built it with the amount of stone and brick that must have been laid. Currently it is maintained by the National Park Service and guarded by iguanas, who by the way like to have their photos taken.