Jardin Marco-Polo offers a nice contrast to the hustle and bustle of downtown. Go for a wander around the grounds or fling off your shoes and feel the grass beneath your feet.
You'll soon see why this 14th Arrondissement recreation and green space is popular with travelers. If you're looking for other things to keep you busy, Eiffel Tower, Louvre Museum, and Arc de Triomphe are in this area too. They won't take you long to get to from Jardin Marco-Polo.