Around 200 km of waterways, which criss-cross Berlin, offer a relaxing alternative to see and experience the city of Berlin. Probably the most popular of the cruises is the "Historische Stadtfahrt," which takes you for a 1-hour ride along the banks of the Spree, the river that takes an important role in the city's history. Beer and Bratwurst (traditional German food) can sometimes be bought on board.