For an adventurous day, head to Peanut Island. This small island is a popular spot for water sports and outdoor activities. Rent a paddleboard or kayak to explore the crystal-clear waters surrounding the island. Snorkel or dive to discover the vibrant marine life. Relax on the sandy beach and have a picnic. Don't forget to visit the John F. Kennedy Bunker, a Cold War-era bomb shelter located on the island.