Spend your last day in San Marino enjoying outdoor activities and shopping. Start your day with a visit to the beautiful botanical gardens, where you can relax amidst lush greenery and colorful flowers. If you're feeling adventurous, try hiking or mountain biking in the nearby countryside. San Marino offers several trails that cater to different skill levels. Afterward, head to the shopping district of San Marino, where you'll find a wide range of shops selling everything from fashion and accessories to local crafts and souvenirs. Take some time to explore the quaint streets and browse through the unique offerings. In the evening, treat yourself to a delicious dinner at a local restaurant, savoring the flavors of San Marino one last time.