Brandenburger Tor (gate); Checkpoint Charlie; Reichstag Building (German parliament building);Kurfuerstendamm for shopping and people watching (think 5th Ave in NYC). If you have time, a trip to Dresden is worth it! Both cities are about 100 miles apart and you can go by bus, car or train. Dresden is beautiful with its old architecture and has some very interesting buildings like the "Zwinger", Semperopera and the Frauenkirche (beautiful Lutheran church). Make sure you eat a Currywurst at Konnopke's Imbiss. They are the best in Berlin
