Spend your third day immersing yourself in the natural beauty of Metz's gardens and parks. Start with a visit to the Jardin Botanique, a peaceful oasis with a wide variety of plant species. Enjoy a leisurely walk and take in the fragrant scents and vibrant colors. Next, head to the Parc de la Seille, a vast park with beautiful landscapes and walking trails. Take a picnic lunch and relax amidst nature. In the afternoon, visit the Parc du Pas du Loup, known for its stunning rose garden and tranquil atmosphere.