Parc André Citroën
Near the outer edge of Paris in the 15th arrondissement, this modern park is a hub of activity in an otherwise calm, residential area. Sure, there are spots to picnic, nap, or admire the gardens, but you really come here to have fun and feel like a kid again. Go up in the miniature hot air balloon to get great views of the city and let your kids play in one of the age-appropriate playgrounds. On hot summer days, come here to cool off by running through the fountains.