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Photo: Root66, CC BY-SA 3.0 via Wikimedia Commons
The zoo is moderately large, and does have some special attractions. In the Zoo, there is an artificial mountain (the Lauterberg), and a memorial for the 49° N parallel. You can also ride small boats ("gondolettas") in the lake. A so-called water organ (music and fountains) plays every 30 minutes.
The Karlsruhe Zoo is a city garden with a zoo in the southwest of Karlsruhe, Germany. It also encompasses the outer area; Tierpark Oberwald in the southeast of the city. The main area totals 22 hectares, and the Oberwald Zoo has an area of 16 hectares. A total of around 3000 animals of over 240 species live at the Zoologische Stadtgarten Karlsruhe. The city garden is located north of the Karlsruhe Hauptbahnhof and south of the Karlsruhe Congress between the Karlsruhe districts of Südstadt and Südweststadt. The zoo was opened in 1865, making it one of the oldest zoos in Germany. The city garden and zoo form a common, enclosed area and cannot be visited separately.
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The biggest theatre and opera house in the city. Your ticket entitles you to use public transportation within the entire KVV to get to the theatre and back on the day of the performance (and until 03:00 the next day).
Staatliches Museum für Naturkunde Karlsruhe
Here can be found lots of interesting animals, also plants, geological exhibits (including an earthquake simulator), etc. Ideal to see with children.
The emblem of the city. It marks the place where Karl Wilhelm was buried, and is somewhat unremarkable.
Zentrum für Kunst und Medientechnologie
ZKM is devoted to interactive and 'media art'. The museum is quite unique, and the exhibitions are world-class. The ZKM also hosts many cultural events, check their home page for the schedule. The same complex also hosts the Museum für Neue Kunst (Museum for New Art) and the city gallery.
Badischer Kunstverein
The second-oldest art association in Germany, founded in Karlsruhe in 1818. Its focus is on contemporary art exhibitions and events (for example lectures, movies, guided tours).