The whole area surrounding this square was historically connected with the Knights Templar - hence the name. Today you can find here a lush park. Its most precious gem is definitely the pond surrounded by many plants. Take your children with you, there is a playground where they can have fun.
Wikipedia https://cs.wikipedia.org/wiki/Square_du_Temple_–_Elie-Wiesel
Address 50 Rue de Bretagne, Paris 75003, France
Coordinates 48°51'52.046" N 2°21'38.722" E