Potsdamer Platz, Berlin
Left a barren wasteland after WWII, Potsdamer Platz is once again the vibrant unofficial heart of Berlin. Tall skyscrapers built with cutting edge designs and sponsored in part by Sony Corporation, the area is full of light and color and activity until late in the evening. A huge train and underground station takes up acres of space below the shops, restaurants and multiplex cinemas, showing films in their original language (a cool treat for movie-starved Americans) plus more than enough people watching to while away the time on a cold fall day while waiting for a movie to start.