My first recommendation is to rent a bicycle. I often suggest a visit to Potsdam. Although
|Potsdam's Brandenburger Gate|
Potsdam's major attraction is Sanssouci Palace, Germany's answer to Versailles. It gets very very crowded, so be prepared! Sanssouci was the former residence of Frederick the Great, and its vast gardens and Rocco architecture make it one of Brandenburg's top attractions.
|The Neuer Garten|
|The Marmorpalais (Marble Palace)|
located on the shore of the Heiliger See
and overlooking the Neuer Park