We went to go see the Berlin Wall graffiti in the morning as a group excursion. It was pretty cool, there was a lot of nice art to see. No tour though, which is what we were expecting.
Afterwards was free time, so I went with a couple others to the Botanical Gardens. It was huge - we barely got into the place before we had to turn around and leave. Still, it was very impressive.
Afterwards we went and had beer at the top two places in Berlin. I don't normally like beer, but I decided that I might as well try new things since I was already in Berlin. Plus, now I can say I had a glass of beer at renowned places. I guess the lesson I'm trying to get across is that one should try new things when traveling. You might like it, and if you don't you at least have a story to tell!