Olivier
A real pleasure
Mulhouse has a great zoo and botanical garden where you can see more than 1,000 animals, plants, trees; it also has a park specifically dedicated to flowers. It's a real treat to spend three hours or so in this place, falling under the spell of the tigers or polar bears, or taking a stroll through the shaded paths. In short, a great place but it's not free (entry is 10 euros).
