One of the city’s main attractions and the oldest zoo in Germany. The pavilions provide lots of indoor space, making this zoo suitable for rainy days. The aquarium is one of the largest in Europe, featuring large tanks with piranhas, sharks, and alligators. Daily 9am–5pm (summer until 6pm). Zoo or aquarium: €13/6.50, under-5s free. Combined zoo-aquarium ticket: €20/10.