This tropical indoor garden features a greenhouse with more than 20,000 plants, including a palm grove and mangrove swamp, as well as animals such as iguanas, parrots, geckos, frogs, and butterflies. Daily Mon– Fri 9am– 6pm, from 10am on weekends and holidays. €11.50/9.80. Under-3s free. www.biosphaere- potsdam.de. Georg- Halemann-Allee 99. T: 0331.550740. Tram 96 from Potsdam Hauptbahnhof. Off Map
In the early 1900s, the Babelsberg film studios produced some of the most important films of the silent era, including Metropolis, until the facilities were taken over by the Nazi regime to produce political propaganda. Today, the studios are still in use, but part of the complex has been turned into a theme park, with old sets, stuntmen, special effects, and children's sections dedicated to popular TV characters. Daily 10am– 6pm from April to October, closed Mon in May and on Mon and Tues in September, on 6 and 13 October. € 21/14, under- 4s free. www.filmpark- babelsberg.de. Grossbeerenstr., Potsdam- Babelsberg. T: 0331.7212750. S Griebnitzsee. Off Map MUST SEE The sumptuous Rococo castle of Potsdam's Sanssouci was commissioned in 1745 by Frederick the Great, who wanted "a place to be without cares." The king of Prussia employed the finest architects of the day to design the Baroque park, the Schloß placed above terraced vineyards, the more sober New Palace, and a few other pavilions scattered in the park. Daily 10am– 6pm (winter until 5pm); Mon closed. €15/11. www.spsg.de. An der Orangerie 1, Potsdam. T: 0331.9694200. S Potsdam or regional train from Zoologischer Garten to Potsdam Hauptbahnhof. Off Map
Berliner Unterwelten (Underground Tours)
Since 1997, the Berlin Underworlds Association has been offering regular tours of underground structures and subterranean complexes that are otherwise inaccessible. Cold War nuclear shelters, Hitler's underground fortress, escape routes to the West, and WWII bunkers are just some of the adventures on offer. From €10. www. berliner- unterwelten.de. Brunnenstr. 105. T: 030.49910517.
CooLTourings Segway Tours
Covering Berlin's top 20 sightseeing highlights, CooLTourings takes individual visitors or large groups on an exciting ride aboard a Segway human transporter, a fun and fast way to explore the city. www.seg- berlin- ways.de. T: 030.26321381.
Fat Tire Bike Tours
Comfort comes first on Fat Tire Tours, whose company concept was created around its curvy bicycles with soft seats, individually adjusted handlebars, and, obviously, fat tires. Tour themes vary. The all- in- one city bike tour is particularly popular. From € 25. www.fattirebiketours.com. Panoramastr. 1a.T: 030.24047991.
For a quintessential Berlin tour experience, hop inside real Trabants, the iconic cars of the former GDR. Visitors drive their personal Trabis, while, via the car's radio, the group leader provides historical and quirky facts. Three different tours available, lasting one or two hours. € 30- 50. www. trabi-world.de. Zimmerstr. 97. T: 030.30201030. At the Gärten der Welt park in Marzahn (www.gruen- berlin.de), visitors explore plants and gardening styles from as nearby as Italy and as far away as Japan.