Zoo
The Tierpark former East-Berlin-Zoo is spacier rather like a park with animals than a classical zoo, in fact it's one of the biggest zoos in Europe than the Zoo in the center of West-Berlin. This Tierpark has nearly as many animals, but fewer reptiles and aquatic animals. There is an old castle from the late 17th century in the northeast of the Tierpark Schloss Friedrichsfelde. Get out at U-Bahn station Tierpark U5.
Victoriastadt
West of S-Bahnhof Nöldnerplatz, Kaskelstrasse A relatively good and complete obtained at least regarding Berlin residential quarter which was built in 19th century. Partly under renovation. Remarkable: There are six of the first ever made buildings built of concrete left 1875 - but you can't make out a difference from the outside.
Stasi (Secret Police) Museum
(http://www.stasi-museum.de) this museum describes the procedures applied by the ddr secret police. get out at magdalenenstrasse u5 and head to ruschestrasse no. 103.
Stasi (Secret Police) Prison
Experience the Stasi Secret Police Prison first-hand. Daily English-speaking tour between July, 1st and November 14th, 2.30 p.m.
German-Russian Museum
(http://www.museum-karlsho...) this museum describes the history of the gdr-russian relationship during the cold war. get out at s-bahn station karlshorst and go by bus 396 direction tierpark 2 or 3 stations.
art galleries
As Berlin is a city of art, it is quite easy to find an art gallery on your way. They provide a nice opportunity to have a look at modern artists' work in a not so crowded environment for free. Here are some of the galleries in Marzahn-Hellersdorf:
Galerie M
open Sunday - Thursday 1 p.m. till 6 p.m. Varying exhibitions, for details see (http://www.berlin.de/ba-m...) in German. Marzahner Promenade 13, 12679 Berlin. Next S-Bahn station is "Marzahn" S 7.Galerie KLIN
open Monday to Friday 10 a.m. to 6 p.m., Ahrensfelder Chaussee 150 a, 12689 Berlin.
World's Garden
Gärten der Welt in Marzahn (http://www.gruen-berlin.d...). Inside you can find a large and well established Chinese garden, a Korean garden, a small Bali's Garden/Glasshouse, an Oriental Garden with nice fountains and a cloister and a Japanese garden which is a project by the city partnership of Berlin and Tokyo. The latter has been built by Zen priests. Guided tours take place on Wednesdays, Thursdays and Fridays every 30 min from 10:30 until 12:30. The park is open daily from 9:00-16:00 in March and October until 18:00, from April to September until 20:00. Although quite crowded at times, there are not that many tourists so here's a chance to brush up on your German skills. Entrance is 2 € in winter and 3 € in summer. As the journey to this park will be around an hour from the city center, don't miss this opportunity to complete your picture of Berlin by seeing some of Berlin's clean and quiet suburbs. Eisenacher Strasse, 99 - Berlin-Marzahn - S7 Marzahn Zone B + Bus 195 before the departure ask to the driver for the right stop. Notice that another Eisenacher Strasse exists in Schöneberg, so don't be mislead by the U7 Station Eisenacher Strasse.