Brandenburger Tor History and take a photo with a guy dressed as Russian soldier
Bands are using the Brandenburger Tor as Backgound. The Rolling Stones, Bon Jovi and yes, even David Hasselhoff.
Reichstag Politics, the history and the chancler, Angela Merkel. There are guided tours. Once it was wrapped for several years. Do not try this.
Strasse des 17. Juni Straight from Strasse unter den Linden, go through the Brandenburger Tor. Left and right is the Tiergarten, a huge park. At the end is the Siegessaeule. On Sundays there is a big flea market. Buy junk, memorabilies, art, everything. Museum Island See human history and anthropology sensations: Pergamon-museum, the Ishtar-Tor, the Nofretete. Fernsehturm Go to the highest building in Germany. Take the elevator and have a view from the observation deck or from the Cafe.
Oranienburger Strasse Walk the line
Scheunenviertel Interesting. Culture. Schloss Charlottenburg Castle to walk around, has a park Tierpark Little and big animals - not stuffed ones
Schönhauser Allee Shopping and sightseeing Kurfuerstendamm
Shop til you drop
Potsdam Try Schloss Sanscoussi - nice landscape and garden, classic architecture. Potsdam is the capital of the state Brandenburg. Near Berlin, it lies on the Havel, here a broad, sealike river.
Nightlife
... not available yet
Hotels
... too many to list them here. Can't afford the Adlon-Kempinski?
I've sen one advertising a room for 15 EURO per night ...