Heading out on a solo retreat to join two friends and their wives, the five of us spent four days immersing ourselves in the vibrant culture and tropical beauty of San Juan, Puerto Rico. Our getaway blended historical exploration with outdoor adventure as we strolled through the colorful, cobblestone streets of Old San Juan, taking in the scenic views along the Old San Juan Waterfront Promenade and visiting the historic fortress of Castillo San Felipe del Morro. We spent an afternoon taking a guided tour at Casa BACARDÍ and browsing the bustling shopping streets near the cruise pier, but the natural highlights were truly unforgettable: trekking into El Yunque National Forest to hike down to a lush waterfall, and capping off our trip with a magical night kayak tour through the glowing bioluminescent bay.