Castillo San Felipe del Morro, a UNESCO World Heritage site in San Juan, Puerto Rico, is largely accessible for exploration, though visitors should anticipate walking, stairs, and some uneven cobblestone paths; comfortable footwear, water, sunscreen, and a hat are highly recommended due to significant sun exposure. While suitable for solo exploration with available maps and informational placards, guided tours (often ranger-led or private) are strongly advised for a deeper understanding of its rich history. The fort is open year-round, but the ideal visiting period is during the cooler, drier months from December to May, avoiding the peak heat, humidity, and potential hurricane activity of summer (June-November). A typical visit lasts 2-3 hours for a thorough exploration, and the approximate entrance fee is $10-15 per adult, often valid for both El Morro and its sister fort, San Cristóbal, for a multi-day period. Beyond its historical significance, the expansive grassy esplanade in front of the fort is a popular spot for kite-flying, offering fantastic photographic opportunities and breathtaking ocean views.