I dd research before we left home and printed out a self-guided walking tour of Old San Juan from a helpful internet site. We followed the tour and had a fantastic time. We learned the history behind the cobblestone streets, saw jail cells from the 1500s, marveled at the city wall, walked the same street as Christopher Columbus, admired the Catholic church where Ponce de Leon is interred, were thoroughly impressed by the Fort El Morro which offered lots of interesting history and amazing photo opportunities and scenic vistas. Don't miss Palomas Park where you can buy a bag of corn for $1 and have the pigeons eat out of your hand. There are scores of pigeons who will sit all over you! Normally, I'm grossed out by pigeons, but this was so much fun! I am glad I had Purell with me! We finished up with shopping in the quaint area. San Juan is friendly, colorful, and interesting. I heard others who visited the El Yunque Rain Forest and they weren't impressed, but we loved our walking tour. Just be sure to wear comfortable shoes as you will do a LOT of walking.