Just one of the many ways to see Berlin. Segue tours are most popular. Private guided tours of 8 to 10 persons for 90 minutes -- only 43 EU -- that's about 59 dollars! I have never seen so many different modes of transportation than in Berlin. It is 7x larger than Paris and so spread out that these clever Berliners take advantage of transportation alternatives. Very green. The tethered balloon is the world's highest and you can get a night ride.