One of my favorite National Historic Sites is Castillo San Felipe del Morro, also known as El Morro. 🏰 This fortification on the corner of the islat of Old San Juan, Puerto Rico has been top tourist attraction for years, but it holds a fascinating past. Built nearly 500 years ago the fort has served as an important military outpost for Spain and later the United States. The Fort has six levels and offers striking views of the Atlantic Ocean. Here what’s you need to know before you go: 🎟️ Your