The Berlin WelcomeCard is a combined transport and reduction card (museums, bike tours/rental, boat tours, etc)
valid for zone AB or zone ABC (which includes Potsdam and Schönefeld airport). Cards are valid for 48 hours (AB €17,90, ABC €19,90), 72 hours (€23,90/25,90) or 5 days (€30,90/35,90
). The 72-hour Museumsinsel Card (€34/36) also includes admission to the permanent collections of those museums. Cards are sold from BVG ticket machines, tourist offices, S-Bahn offices, hotels and kiosks. The similar CityTourCard (www.citytourcard.com) is €1 cheaper and is geared towards younger travellers with restaurant, bar and club discounts. Students/youths: you may get better reductions at museums using your student ID cards.