Tiergarten Ulm is a small zoo and aquarium in Friedrichsau park, best suited to families and travellers with children. Animals, fish and terrarium exhibits make it a low-key companion to the riverside park rather than a full-day zoo.
It is useful when you want a relaxed break from churches, museums and old-town lanes. Combine it with a walk along the Danube or through Friedrichsau, especially in good weather.