The Reichstag dome and its free city view

One of Berlin's best views costs nothing, but it does take a little planning. The glass dome atop the Reichstag, the German parliament, spirals up to a viewing platform with panoramas across the city, and entry is free. The catch is you must register in advance, as walk-ups aren't allowed and slots fill up. Go near sunset for the best light. We'll explain exactly how to book your free slot and what to expect when you arrive.